HomeMy WebLinkAboutPlanning Comm Reports/1994/09/13 (2)
MEMORANDUM
September 13, 1994
SUBJECT:
William C. Tuchscher II, Chair and Members of the City of Chula
Vista Planning Commission ~
Martin Miller, Associate Planner ~
PCS-91-02/IS-91-15: Revised Biological Assessment of the Proposed
Bonita Hills Estates, City of Chula Vista, California
TO:
FROM:
The attached biological study is a revised edition of the above assessment. The
original is dated 4 September 1992, while the revision is sub-dated "(Revised 16
March 1993)." The revised assessment replaces pages 1-45 to 1-67 in your packet
for Wednesday night's meeting. Please review this information prior to the
meeting.
BIOLOGICAL ASSESSMENT
OF THE PROPOSED BONITA HILLS ESTATES
CITY OF CHULA VISTA, CALIFORNIA
UTM #495.500 mE; 3.612,000 mN; 11; N.
Prepared for
City of Chula Vista
Planning Department
276 Fourth Avenue
Chula Vista CA 91910
Tel (619) 691-5047
Prepared by
Pacific Southwest Biological Services, Inc.
Post Office Box 985
National City CA 91951-0985
Tel ((>19) 477-5333
Fax (619) 477-1245
<4 September 1992
(Revised 16 March 1993)
Y~d
~ Mitchel Beauchamp, President
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TABLE OF CONTENTS
SUMMARY ..,........,.,.......",..,........,',......,.....,.....,... 1
INTRODUCTION ."",."...."...,...,........."....."...."....... 1
METHODS ,........."....,..........,..",........,.....,..."....,.. 1
LOCATION ."..",..""..."."",........",......".....,......... 2
GENERAL PHYSIOGRAPHY . . . . . . , . . . . , . . . . . . . . , . . , , . . . . , . . . . . , . . . . . . . . ., 2
BOTANICAL RESOURCES".......""".......,.."......,..."..."..., 4
VEGETATION, . . . . . , , , , . . . . , . , , , , . . . . . . . . . . , , . . . . . . . . . . . , , . . . . . . , .. 4
DIEGAN SAGE SCRUB ....",...,.......,........,...."........ 4
ANNUAL GRASSLAND/DISTURBED ,..........,........,.......,.... 4
FLORA ,...,...........,............,.......,.................... 4
ZOOLOGICAL RESOURCES ..,.........,.".."......."..."..."...,... 6
GENERAL Wll.DLIFE HABITAT. . . . , , . , , , . . . . . . . , . . , . . . . , , . . . . , . . . . , . . . ,. 6
AMPHIBIANS ......."......"..",...,.."..,....,.....,....,...,. 6
REPTILES. . . , . . . , . . , . . . , , . . , . . . . . . . . , . . . , , . . . , , . , . . . . . , . . . . , . . . , .. 6
BIRDS .,.........,..........",..,......."......,............... 6
MAMMALS . , . . . . . . , . . . . . . , . . . . . . . . . , . . , , . . . . . . . , , . . . . , . . . , , . . . . , ., 7
SENSITIVE BIOLOGICAL RESOURCES . . . , , . . , . . . . . , . , , . . . . , . , , . . , . . . . . . . . .. 7
SENSITIVE VEGETATION ".,...",.",......".."...,..,....".,...,. 7
SAGE SCRUB , . . . . , . . , . . . . . . . . . , . , , , , . , . . . . , . . . . . . . , . . . . . . , . ., 7
SENSITIVE PLANTS DETECTED ON-SITE ,.......,..",....,.,...........,.. 7
SENSITIVE PLANT SPECIES KNOWN FROM THE REGION BUT NOT FOUND ON-SITE , .. 11
SENSITIVE SPECIES OF VERTEBRATES OF VERIFIED OCCURRENCE ..........,..". 11
SENSITIVE VERTEBRATES WHICH POSSIBLY OR PROBABLY OCCUR ON-SITE. . . . , . . ., 12
EXPECTED BIOLOGICAL IMPACTS.."."......."""...".....,...,...,. 14
RECOMMENDATIONS TO REDUCE BIOLOGICAL IMPACTS......"....,...... 14
LITERATURE CITED, , . . . . , . , . . . . . . . . . , . . . . . , , . . . . . . . , . . . . . . . . . . . . . . . , .. 15
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FIGURES AND APPENDICES
FIGURE 1.
FIGURE 2.
PROJECT VICINITY MAP ..........,..,........"..............., 3
VEGETATION AND SENSfTIVE REsOURCES ,...."......."....,..,.,' 5
APPENDIX 1. FLORAL CHECKUST ......."............"...."...."..,..... 17
APPENDIX 2. ANIMALS OBSERVED OR DETECTED , , . . . . . . . . . , . . . . . . , , . . , , . . . , . . .. 20
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BIOLOGICAL ASSESSMENT
OF THE PROPOSED BONITA HILLS ESTATES
CITY OF CHULA VISTA, CALIFORNIA
Pacific Southwest Biological Services, Inc,
4 September 1992
(Revised 16 March 1993)
SUMMARY
A biological survey of the 8.52-acre Michael Demish properry west and south of the
Bonita Valley Reservoir revealed that the site is utilized by both Coastal Cactus Wrens
and the California Gnatcatcher. The former inhabits sage scrub and cactus near the
ravine along the western fenceline, and use areas extend off-site into higher quality
habitat immediately west. The gnatcatchers were noted at the same locale; as well as
in sage scrub now growing on the earthen seal for the reservoir (off-site). Two
easements of 1.21 and 1.50 acres are proposed as dedicated biological open spaces to
protect these sensitive birds and their habitat.
Two plants of limited sensitivity were noted: Several California Adolphia grow near
the ravine along the western boundary, and eight San Diego Viguiera occur further
upslope to the north. Habitat quality varies widely on the properry, with disturbed
grasslands in the south and north, and fair to good quality Diegan Sage Scrub covering
much of the canyon's flanks in the center of the properry,
INTRODUCTION
A biological survey of the Demish site was performed by Pacific Southwest Biological Services,
Inc. at the request of Ms. Marilyn Ponseggi. The purpose of the survey was to identify sensitive
biological resources and constraints in the preliminary phases of development design for a fourteen lot
split.
METHODS
The botanical portion of the survey was conducted by Craig H. Reiser on August 10, 1992.
The on-foot survey covered all slope aspects, soil types, and drainages. Particular attention was given
to the native sage scrub habitat, Vegetation and sensitive plant locations were delineated on a l' - 40'
topographic map. An additional morning field date was utilized to flag boundaries for open space
LotB.
The zoological portion of the survey was conducted by Claude Edwards on August 6 from 1245
hours to 1600 hours, Skies were hazy, humidity was high; the temperature was 840 P.; and winds were
light and from the west,
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All habitat types present within the study area were surveyed for wildlife, Binoculars of
10 x 40 power were used to observe and help in the identification of wildlife species and their habitats.
Surface liner such as fallen logs, rocks and trash were overturned to locate amphibians and/or reptiles.
Anention was also given to the identification of mammal tracks, scat or other sign, Listening for and
noting wildlife vocalizations was also an important aspect of data gathering,
Prior biological surveys of the immediate region were examined to assess sensitive resources
known from the vicinity of the site (pSBS 1981, 1989; RECON 1982),
Scientific nomenclature used in this report is from the following references: vegetation,
Holland (1986); flora, Beauchamp (1986) and Munz (1974); birds, American Ornithologists' Union
(1983, 1989); reptiles and amphibians, Collins (1990); and mammals, Jameson and Peeters (1988).
Wildlife habitat delineations generally follow Mayer and Laudenslayer (1988).
LOCATION
The site lies within unsectioned lands of the Spanish grant for Rancho de la Naci6n; Township
17 South, Range 2 West of the San Bernardino Base and Meridian; USGS National City California 7.5'
Quadrangle. Access is from the north via Moonview Drive (Figure 1).
The 18.7 million gallon reinforced concrete Bonita Valley Reservoir to the east includes a two
foot earthen "blanket" over the concrete, on which sage scrub was seeded (RECON 1982). The
predominate land use surrounding the property is residential homesites; a large tract of sage scrub
occurs on the eastern boundary (including the revegetated reservoir site).
GENERAL PHYSIOGRAPHY
The site consists primarily of a rectangular tract of land abutting the Bonita Valley Reservoir
on the west, accessed by a continuation of Moonview Drive (presently gated at the property line), The
southern end of the property features disturbed north-facing slopes which gradually drop into a
drainage with sage scrub, The terrain rises again to the north onto a barren ridgeline, before dropping
steeply into Bonita Valley. On the eastern boundary near the center of the site is a disturbed fill slope
abuning the buried reservoir.
The high elevation is 308 feet at the south end of the property, on a hillside below a water tank
while the low elevation is approximately 116 feet in the extreme northwestern comer of the property
on a steep slope overlooking Bonita Valley.
Soils for the site are primarily Linne clay loam on 9-50% slopes, with Olivenhain cobbly loam
9-30% slopes near the southern boundary (Bowman 1973), Underlying geology is mapped as the Otay
Formation; San Diego Formation, sandstone part; and Linda Vista Formation (Kennedy 1977).
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PROJECT VICINITY MAP
USGS 7.5' National City Quadrangle
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BOTANICAL RESOURCES
VEGETATION
Two vegetation types were present on the property: Diegan Sage Scrub and a very disturbed
Annual Grassland (Figure 2).
DIEGAN SAGE SCRUB (2.89 acres; includes 0.15 acre Cactus Phase Diegan Sage Scrub)
Shrub diversity at the Bonita Hills site is relatively limited. Unusual for the region is the high
incidence of California Encelia (Encelia californica), which although a common plant, is rarely the
dominant cover. Also occurring here is Coastal Sagebrush (Artemisia californica), Lemonadeberry (Rhus
integrifolia) in the more mesic canyon bottom, Flat-top Buckwheat (Eriogonum fasciculatum), Spanish
Bayonet (Yucca schidigera), and Black Sage (Salvia mellifera). Near the western boundary, by the
drainage, grows some Jojoba (Simmondsia chinensis), Coast Cholla (Opuntia prolifera), and further
upslope San Diego Viguiera (Viguiera laciniata) in limited numbers.
The understory is relatively limited. Native elements include the late-flowering San Diego
Wand Chicory (Stephanomeria diegensis), Bicolored Cudweed (Gnaphalium bicolor), Ocean Locoweed
(Astragalus trichopodus), and California Filago (Filago californica). At one artificially moist locale along
the southern boundary, near an irrigated residential yard, is found one Arroyo Willow (Salix lasiolepis)
and a Great Marsh Evening Primrose (Oenothera elata); no other wetland species were seen on the
property.
In general, the higher quality, more diverse sage scrub is concentrated near the drainage along
the western boundary.
ANNUAL GRASSLAND/DISTURBED (5.63 acres)
This disturbed habitat includes an abundance of the noxious Tecolote (Centaurea melitensis) and
Wild Mustard (Brassica geniculata). Both of these weeds sometimes form such a dense, low canopy, that
little else can grow beneath. On the south-facing slope is considerable Crystal lee Plant
(Mesembryanthemum crystallinum), an introduced succulent species from South Africa. While some sage
scrub elements are slowly pioneering within this dismrbed vegetation, the overall quality of this
grassland is considered poor. Much of the grassland habitat in the south may have been created during
construction of the adjacent buried reservoir. Grassy areas on the ridgeline in the north (near another
old homesite) are likely the result of peripheral residential disturbance.
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FLORA
Seventy species of plants were recorded on-site of which thirty-seven are non-native invasive
elements (Appendix 1). An estimated 20% of the flora consists of ephemeral native and non-native
annuals which had decomposed by the August survey date. None of these additional species is
expected to be listed as sensitive.
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The flora on-site is not as "complex" as what historically occurred in Rice Canyon to the south
(c. Reiser pers. obs.) prior to extensive grading over the last decade. Presence of Jojoba and dense
concentrations of Coast Cholla (primarily immediately off-site to the west) are indicative of the desert
influences seen in this region.
ZOOLOGICAL RESOURCES
GENERAL WILDLIFE HABITAT
There are two major habitat-types for wildlife found over the site, Diegan Sage Scrub and
Annual Grassland. A small canyon with a few large shrubs at the western end of the properry is kept
moist by suburban runoff. This is an attractive area for animal-life in an otherwise arid environment.
Two sensitive species of birds were observed utilizing the available sage scrub habitat, Coastal Cactus
Wren (Campylorhynchus brunneicapillus sandiegense) and California Gnatcatcher (Polioptila californica).
AMPHIBIANS
Due to the timing and length of the survey, no species of amphibians were observed. Pacific
Chorus Frog (Pseudacris regilla) and Western Toad (Bufo boreas) may occur in the artificially moist
canyon area.
REPTILES
Only one species of reptile was observed due to humid, overcast weather conditions at the time
of the survey. The Side-blotched Lizard (Uta stansburiana) is a common inhabitant of the sage scrub.
Additionally, the following reptiles may also occur on the properry: Western Fence Lizard (Sceloporus
occidentalis), Coastal Whiptail (Cnemidophorus tigris multiscutatus), Orangethroat Whiptail
(Cnemidophorus hyperythrus) and San Diego Horned Lizard (Phrynosoma coronatum blainvillet).
BIRDS
Fifteen species of birds were observed on the site (Appendix 2). Most of the species were
associated with the natural sage scrub habitat, including California Quail (Callipepla californica),
Bewick's Wren (Tbryomanes bewicki.), Wrentit (Chamaea fasciata), California Thrasher (Toxostoma
redivivum), California Towhee (Pipilo crissalis) and Rufous-sided Towhee (Pipilo erythrophthalmus).
Anna's Hummingbirds (Calypte anna) fed in association with Tree Tobacco (Nicotiana glauca) growing
on-site. Mourning Dove (Zenaida macroura), Northern Mockingbird (Mimus polyglottos) and House
Finch (Carpodacus mexicanus) are associated with urban, exotic vegetation.
As many as six Coastal Cactus W reDS were observed and heard during the field survey on-site
and in an immediately adjacent area. These birds were seen and heard in the cholla and prickly pear
cactus growing in the canyon along the western fenceline both on and just off-site. A separate single
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Cactus Wren was heard singing from similar habitat in the canyon off-site and north of the gate on
Moonview, and additiona! habitat is present on south-facing slopes within Diegan Sage Scrub to the
east of this property.
One pair of Ca!ifornia Gnatcatchers utilize this property, and adjacent, similar sage scrub
habitat off-site. No nesting activity was detected, but the qua!ity of the available sage scrub habitat is
rather good. A separate single gnatcatcher was seen and heard briefly to the northeast of this property
along Randy Lane, indicating their presence there as well. Another pair of gnatcatchers uses the
revegetated sage scrub covering the adjacent underground reservoir and the sma!l tract of sage scrub
off-site in the southeast (south of Moonview Drive).
MAMMALS
Desert Cottontail (Sylvilagus auduboni/) was observed. Coyote (Canis latrans) was detected
from its scat. Ca!ifornia Ground Squirrel (Spermophilus beecheyl) burrows were found, and they
undoubtedly occur on-site, particularly within the disturbed terrain.
SENSITIVE BIOLOGICAL RESOURCES
SENSmVE VEGETATION
SAGE SCRUB
Both the Riversidian phase and the Diegan phase of Coasta! Sage Scrub have been severely
reduced in tota! acreage over the last century. The principa! reasons for this reduction were initia!ly
overgrazing by livestock and clearance of agricultura! lands, followed in many cases by urban residential
and commercia! development. Some fauna! elements heavily dependent upon sage scrub habitat have
suffered corresponding severe drops in individua! numbers and distribution. Notable examples include
the Ca!ifornia Gnatcatcher, San Diego Cactus Wren, the coasta! race of the Sage Sparrow, and to a
more limited extent, the San Diego Horned Lizard (which also occupies chaparra! habitats and open
grasslands). Along with the extensive reduction in sage scrub has come a piecemeal fragmentation of
larger tracts of such habitat. Isolation into small parcels devoid of viable linkages to other similar lands
has undercut the value of such lands. The sensitivity of sage scrub in southern California will
inevitably become more acute as additional lowland development takes place in San Diego, Orange and
Riverside counties.
SENSITIVE PLANTS DETECTED ON-SITE
Two sensitive plant species occur on-site, California Adolphia and San Diego Viguiera. Severa!
of the former grow near the western fence line near the area occupied by the Coasta! Cactus Wrens.
Upslope, and of little botanica! significance, were seen eight San Diego Viguiera. This species is
relatively common in the region, but has a limited U.S. range.
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California Adolphia (Adolphia califorruca)
LISTING:
DISTRIBUTION:
HABITAT:
KNOWN SITES:
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State/Fed. Status - None RHAMNACEAE
Coastal San Diego County; Baja Califorrua, Mexico
This short shrub is often intermixed with Diegan Sage Scrub, but occasionally
occurs in peripheral chaparral habitats, particularly hillsides near creeks, The
Califorrua Adolphia (sometimes called Califorrua Spinebush) is usually associated
with Eriogonum fasciculatum and Artemisia californica in xeric locales where shrub
canopy reaches four or five feet in height. During late summer and fall it may be
virtually leafless, and therefore not apparent from a distance; however, its spiny
stems are readily noted at close range. The San Miguel and Friant soils are both
quite amenable to Califorrua Adolphia.
Califorrua Adolphia is still found at a variety of coastal San Diego County locales.
Substantial populations occur south of Del Dios Highway and 1 mile southwest of
Lake Hodges Dam on steep north-facing slopes, and on south-facing slopes of
Escondido Creek east of Lake Val Soreno. A very extensive colony with over 1000
shrubs was found in 1990 near the Inspiration Point Cross north of the Questhaven
Retreat. One of the largest sites noted is a football field sized colony almost
entirely composed of Adolphia upstream of the Sweetwater Reservoir, south of the
old wooden bridge, on the south side of the river. Several thousand are found
across the river and just upstream where they are a dominant element within the
sage scrub. Scanered sites are in the hills south of the Sweetwater Reservoir and
on the flanks of Mother Miguel Mountain. Another large population occurs on a
west-facing slope east of Saxony Road near Batiquitos Lagoon. This shrub was
noted in limited numbers at numerous other surveyed sites including the finger
canyon east of Dillon Road on southern Otay Mesa, at scanered locales in Otay
Valley east of the Interstate 805, in the sage scrub north of Lower Otay Lake,
below Sweetwater Dam, a hillside west of Lake Murray Dam, along San Marcos
Creek below San Marcos Dam, west of Melrose Drive and south of Shadowridge
Drive in Vista, and on north-facing slopes of Peiiasquitos Canyon just south of the
water treatment plant near Poway, Small populations were seen near Akita Lane
in Rancho Santa Fe, at the eastern terminus of Rosemont Street in La Jolla, near
the Fairbanks Country Club south of San Dieguito Road, south of Aliso Canyon
Road near Rancho Santa Fe, on the Green Oaks Ranch at Agua Hedionda Creek,
on canyon slopes west of Black Mountain Road and north of Peiiasquitos Canyon,
on the eastern boundary of Fairbanks Ranch, near Mercy Road east of
Interstate 15, and near the intersection of Poinsenia Avenue and Palomar Airport
Road. Also, old reports on the periphery of its known range are near southern
Camp Pendleton at Moro Hill, as well as to the southeast of most reports near
Barrett Junction. Old Biological survey reports note sites, northwest of Lake
Hodges Dam, near Lake Calavera, west of the Olivenhain Cemetery, on Rancho
Aqua Hedionda Y Los Manos near Aqua Hedionda Creek, near El Apajo Road just
south and beyond the Rancho San Dieguito boundary, 0.5 mile north of La Zanja
Canyon and 1 mile east of San Dieguito Valley, southwest of Sienna Canyon Drive
in Encirutas,. Sundance Mountain near Carmel Mountain Drive, between Evans
Point and Lenerbox Canyon, and near the intersection of Fairrnont and
Montezuma Roads in the viciruty of San Diego State Uruversity. Data Base records
are from the Otay River near the mouth of Johnson Canyon, northeast of Agua
Hedionda Lagoon west of EI Camino Real Road between Skyline Road and
Neblina Drive, 2 miles north of San Marcos Creek and east of EI Camino Real to
the north of the golf course, 2 miles east of the San Dieguito Reservoir and 0.6 mile
south of the San Dieguito River north of a danuned pond, the Kelly Ranch about
1.1 mile south of Calavera Lake in Carlsbad, 0.8 mile south of Highway 78 and
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0.9 mile east of El Camino Real in Carlsbad, between Interstate 15 and Black
Mountain Road 0.5 mile north of Mira Mesa Boulevard, adjacent to Interstate 15
and Chicarita Creek from 1.0 to 1.7 miles north of Poway Road and to the
northeast, southwest flank of Paint Mountain near Rancho Santa Fe, north of
confluence of Lusardi Creek and San Dieguito River east of Rancho Santa Fe, north
of Artesian Road and 1.5 miles south of the San Dieguito River, 1 mile east of the
San Dieguito Reservoir, 1 mile from San Diego State University near the western
corner of Yerba Santa Drive and Montezuma Road, one block south of Mission
Gorge Road near Margerum A venue, Alvarado Canyon 0.5 mile southwest of Lake
Murray, on Black Mountain Road about 0.4 mile northeast of 4-S Ranch and
0.5 mile east of Artesian Road, the east slope of Battle Mountain, north and south
of Paco Lago Road and west of Via Abertura Road near Fairbanks Ranch, north
of Manchester overlooking the San Elijo Lagoon, Lux Canyon in Encinitas,
southwest side of Evans Point Headland near Agua Hedionda Lagoon, just south
of Encinitas Road about 400 yards from the junction with Linda Vista Road, Lopez
Ridge, south of Lake Hodges and 2.5 miles west of Battle Mountain, northern
tributary canyons of La Jolla Valley on the 4-S Ranch 3.5-4.5 miles south of Lake
Hodges, 1.2 miles north of San Marcos Creek between EI Camino Real and
Unicornio Street, 1.2 and 1.8 and 2.1 miles southwest of Lake San Marcos Dam
near Santa Fe Road realignment, north of San Marcos Creek and 0.3 mile south of
Alga Road, San Marcos Creek near Rancho de los Quiotes, 0.5 mile west of San
Francisco Peak and 0.4 mile northeast of Cerro de la Ca1avera, Evans Point east to
approximately 0.5 mile west of Mount Hinton, near CarIsbad 0.5 mile south of
Mount Hinton, southwest of Mount Hinton near the intersection of Palomar
Airport Road and EI Camino Real, west side of Green Valley on the Ecke Ranch
0.6 mile southwest of intersection of La Costa A venue and EI Camino Real, 2 miles
north of intersection of Encinitas Boulevard with Manchester A venue and 1 mile
east of El Camino Real, 1 mile southeast of La Costa Country Club east of Green
Valley, north of Batiquitos Lagoon and 1.2 rniles northwest of La Costa Country
Club, Batiquitos Lagoon approximately 1 mile northeast of the intersection of
Interstate 5 and La Costa A venue, 0.25 mile west of intersection of EI Camino Real
and Arenal Road, north of bend on Lusardi Creek approximately 2-2.5 km from
confluence with San Dieguito River, 1 km south southeast of confluence of Lusardi
Creek and San Dieguito River, south of La Jolla Valley and 4.8 km due south of
Lake Hodges Dam, near Carmel Mountain, and a number of locales northeast and
northwest of intersection of Black Mountain Road and McGonigle Road on Black
Mountain Ranch.
Collected south in Baja California to 300 6' North by Moran (SD 87216) at
Sauzalito-2. Lightly collected in Baja with 14 specimens deposited in the San Diego
Natural History Museum's herbarium.
STATUS: California Adolphia is declining substantially due to urban growth; still healthy
populations are extant. Rarely, this spiny shrub is a dominant on hillsides and such
sites should be protected. Although Adolphia is not uncommon, a decade of
continued urbanization along the coast will drastically reduce the populations now
extant. California Adolphia should be considered for native revegetation projects
in suitable habitat.
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San Diego Viguiera (Viguiera /aciniata)
LISTING:
DISTRIBUTION:
HABITAT:
KNOWN SITES:
CNPS List 2 R-E-D Code 1-2-1
State/Fed. Status - None ASTERACEAE
San Diego County, Baja California, Mexico
An arid Diegan Sage Scrub is typically the preferred habitat of this species, which
is often a co-<lominant element of the shrub community where it occurs, along
with Artemisia califomica. Generally the shrub cover is more open than at mesic,
coastal locales where sage scrub is found. This species occurs on a variety of soil
types. Olivenhain cobbly loam is mapped for the large populations of Viguiera at
Lower Otay Lake and Sweetwater Lake; Las Posas fine sandy loam and Cieneba
very rocky coarse sandy loam are utilized at some sites further inland such as near
Sequan Indian Reservation.
This is a dominant shrub in southern San Diego County in Diegan Sage Scrub
habitat away from the immediate coast. It is very common in areas of the Jamul
Mountains, and found by the thousands east of Upper Otay Lake and along the
north shore of Lower Otay Lake. It is also abundant near Jamul Butte, Dehesa,
Donohoe Mountain, at the south end of Dillon Road on Otay Mesa, in the hills
east of Isham Springs and Jamacha Road, as well as near the Sequan Indian
Reservation and Sloane Canyon. San Diego Viguiera is occasional northeast of
Magnolia Avenue in Santee, in Murphy Canyon north of Clairemont Mesa
Boulevard, at Tim Street in Bonita, by Lynndale Lane east of Interstate 805 in
Chula Vista, around Lake Murray such as near Navajo Road, at Hidden Mountain
Drive near EI Cajon, on the north-facing slopes overlooking the Otay River near
Bayer Boulevard, at the terminus of Halifax Street in the Mission Gorge area, off
Valley View Truck Trail in EI Cajon, near Serena Road in the Eucalyptus Hills
area, by Farrell Lane in Crest, by Fuerte Valley Road in the Calavo Gardens area,
near Ivanho Street on Dictionary Hill, off Vista de Chaparros Drive in Jamul, near
Chester Grade Road in La Mesa, between Imperial A venue and 59th Street in
Encanto, in Johnson Canyon on northeastern Otay Mesa, and in La Zanja Canyon
near Rancho Santa Fe. It is rare north of Highway 78 and progressively more
common as one travels south. It is found in open sage scrub in Military Sector
Charlie on Camp Pendleton overlooking San Mateo Creek, its northernmost
known locale. Old reports include east to Potrero, at Tecate, and near Barrett.
Well inland it becomes uncommon north of Poway.
Forty-two collections are found at the San Diego Natural History Museum's
herbarium from Baja California; south to 280 6' North; where collected by Moran
(SD 65229) approximately 5.5 miles southwest of Rancho el Canon. It is COmmon
immediately south of San Diego County into Baja California.
STATUS: San Diego Viguiera is declining but still found at numerous locales where
occasionally it is a dominant shrub. This species shows some ability to colonize
areas of mild disturbance and is readily grown from seed. This species is
recommended for de-listing by the CNPS; it is too Common and wide-ranging in
San Diego County to warrant such a listing.
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11
SENSITIVE PLANT SPECIES KNOWN FROM THE REGION Bur NOT FOUND ON-SITE
Growing on a hillside approximately one half mile to the west of the study site in similar sage
scrub habitat (pSBS 1989) are San Diego Barrel Cactus (Ferocactus viridescens) and Snake Cholla
(Opuntia parryi var. serpentina), Both were searched for on-site but not seen. Also known from the
area are Otay T arweed (Hemizonia conjugens) on clay substrate near Otay Lakes Road and along
Proctor Valley Road to the east, Cleveland's Golden Stars (Muilla clevelandi!) a bulb not readily seen
except during the spring, Green's Ground Cherry (Plrysalis greene!) which grows beneath sage scrub in
Otay Valley, and San Diego Marsh Elder (Iva hayesiana) in drainages such as the Otay River. San
Diego Thornmint (Acanthomintha ilicifolia) is found in Poggi Canyon in distinctive friable soils;
Orcutt's Bird's Beak (Cordylanthus orcuttianus) and San Diego Bur-Sage (Ambrosia chenopodiifolia) once
grew in Rice Canyon.
SENSITIVE SPECIES OF VERTEBRATES OF VERIFIED OCCURRENCE
Two species of sensitive vertebrates were detected on the subject property.
Coastal Cactus Wren (Campylorlrynchus brunneicapi/lus sandiegense)
LISTING:
DISTRIBUTION:
HABITAT:
STATUS:
USFWS (1991) - Category 2
CDFG (1990, 1991b) - Species of Special Concern
Scattered populations occur from Piano T rabuco in southern Orange County, east
to the Peninsular Ranges of San Diego County and south to Valle de las Palmas,
Baja California.
Patches of Prickly Pear or Cholla cactus in sage scrub.
Declining. This subspecies is one of the most endangered birds in California.
Large areas of its limited habitat has been lost and continues to decline due to
urban development.
Cactus wrens nest in the Coast Cholla in the drainage on-site and in similar habitat immediately
west. As many as six birds were seen in this area of which 2 pairs are expected to make use of the site.
Presence of cactus wrens on-site is considered extremely significant and warranting protection,
California Gnatcatcher (Polioptila californica)
LISTING:
DISTRIBUTION:
HABIT A T:
STATUS:
04/08/93
USFWS (1986, 1989) - Category 2. A petition to list the California Gnatcatcher as
Endangered was accepted in September 1991. A decision is due by spring of
1993.
CDFG (1990, 1991b) - Species of Special Concern
Everett (1979) - Declining
San Diego County, Riverside County, and Orange County; Baja California,
Mexico.
Diegan and Riversidean Sage Scrub. Also occurs in Maritime Succulent Scrub.
Seriously declining due to loss of habitat. BetWeen 85% and 90% of this species'
habitat has been lost to urban or agricultural development. It has already been
extirpated from Ventura, San Bernardino and most of Los Angeles counties. This
bird is non-migratory. The United States population is currently estimated to be
1- .s 4K- If
Plldftt southwest BiologiCAl 5<rViw, Inc.
PSBS #K80
12
between 1,200 and 2,000 pairs (Atwood 1990). The California subspecies (P. c.
cali/omicus) has a very narrow coastal range in Baja California, Mexico from the
United States border south to the vicinity of EI Rosario. San Diego County
appears to be the center of abundance within the United States for this species.
This bird has been proposed for Endangered status by the U.S. Fish and Wildlife
Service.
One pair of gnatcatchers was observed in the reservoir lands to the east (off-site) which have
been revegetated with Diegan Sage Scrub. The male was observed to cross the road into the sage scrub
immediately off-site (and adjacent to disturbed grasslands on-site). A second pair was observed along
_ __ __ ~he western boundary near the cactus wrens.
SENSITIVE VERTEBRATES WHICH POSSIBLY OR PROBABLY OCCUR ON-SITE
Six additional species of sensitive vertebrates are known from the region and may occur on-site.
San Diego Homed Lizard (Phrynosorna coronaturn blainvillei)
LiSTING:
DISTRIBUTION:
HABITAT:
STATUS:
USFWS (1991) - Category 2
CDFG (1990, 1991b) - Species of Special Concern
CDFG (1991a) - Fully Protected
SDHS (1980) - Endangered
SDNGWS (1976) - Species of Local Concern
Ashton (1976) - Threatened
CITES (1976) - Category 2
IUCN (1979) - Depleted
California and Baja California, Mexico
Open chaparral, sage scrub, pinel oak woodlands, and along washes.
Declining, primarily due to habitat destruction and habitat degradation. Pet
collection has also attributed to their decline.
This lizard is potentially present within the sage scrub. Its occurrence would be of limited
biological import.
Orangethroat Whiptail (Cmmidophorus hyperythrus belding')
LiSTING:
DISTRIBUTION:
HABITAT:
STATUS:
04/08/93
USFWS (1986, 1989, 1991) - Category 2
CDFG (1990, 1991b) - Species of Special Concern
SDHS (1980) - Threatened
SDNGWS (1976) - Species of Local Concern
CITES (1976) - Category 2
IUCN (1979) - Rare
Limited; found from southern Orange County, western Riverside and San Diego
counties south to southern Baja California, Mexico.
Open sage scrub, chaparral and along the edges of riparian zones and washes.
This species is still relatively common in areas where good habitat occurs; however,
vast areas of former habitat in the coastal lowlands have been converted to urban
and agricultural development.
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PSBS #K80
13
This lizard is potentially present within the sage scrub and more likely than the horned lizard
to occur on the properry. Its occurrence would be of limited biological import.
Coastal Whiptail (Cnemidophorus tigris mu/tiscutatus)
LISTING:
DISTRIBUTION:
HABITAT:
STATUS:
USFWS (1991) - Category 2
Santa Barbara County southward through the northern two-thirds of Baja
California, Mexico.
Open sage scrub, chaparral, open woodlands and bordering areas, along the edges
of riparian zones and washes, desert and semi-arid habitats.
This species is still relatively common in areas where good habitat occurs; however,
vast areas of former habitat in the coastal lowlands have been converted to urban
and agricultural development.
This lizard is potentially present within the sage scrub; its occurrence on the site :""ould not
be considered biologically significant.
Northern Red Diamond Rattlesnake (Crotalus ruber ruber)
LISTING: USFWS (1991) - Category 2
CDFG (1991b) - Species of Special Concern
DISTRIBUTION: Within its United States range confined primarily to the Peninsular Ranges, being
found from extreme southern Los Angeles County and Morongo Valley south into
Baja California, Mexico.
HABITAT: Frequents rocky outcrops in chaparral, sage scrub or desert scrub on both coastal
and desert slopes, usually below 1219 meters.
STATUS: Still fairly common where extensive areas of habitat remain. This and other species
of rattlesnakes are frequently persecuted by humans. This species is considered
sensitive because of its limited United States range.
This snake is potentially present in the sage scrub. Occurrence on-site would be of limited
biological importance.
Northwestern San Diego Pocket Mouse (Perognathus fallax fallax)
LISTING:
DISTRIBUTION:
HABITAT:
STATUS:
USFWS (1991) - Category 2
San Onofre north to Claremont, northeast to Banning, then south to J acumba and
on into Baja California to San Quentin.
Coastal sage scrub.
Unknown, believed to be declining due to extensive habitat loss to development.
This pocket mouse is locally common in the Bonita area in sage scrub and may occur on-site.
Only a trapping program would likely indicate presence/absence. Occurrence on-site would be of no
biological significance.
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PSBS #K80
14
San Diego Desert Woodrat (Neatama lepida intermedia)
HABITAT:
STATUS:
USFWS (1991) - Category 2
Coastal Southern California and Baja California from San Luis Obispo south to San
Bernardino Mountains, Redlands, and continuing south through Julian and Dulzura
and on into Baja California to the Sierra San Pedro M:hir. A disjunct population
also is reported from the Porterville area.
Sage scrub and chaparral.
Unknown but believed to be declining due to loss of habitat.
LISTING:
DISTRIBUTION:
This woodrat is locally common in the Bonita area in sage scrub and may occur on-site. Only
a trapping program would likely indicate presence/absence. Occurrence on-site would be of no
biological significance.
EXPECTED BIOLOGICAL IMP ACTS
Substantial redesign has eliminated initial significant biological impacts. Several adverse
biological impacts will result from the proposed 12-lot split.
1. Loss of 1.5 acres of Diegan Sage Scrub. This habitat is severely declining in the
Bonita region due to urban development, and its conservation is a focus of regional
planning for both Chula Vista and San Diego Counry. This highest quality sage
scrub is situated in proposed open space B (1.2 acres). Impact sage scrub is of lesser
or degraded quality.
2. The loss of eight San Diego Viguiera are not considered biologically significant.
RECOMMENDA nONS TO REDUCE BIOLOGICAL IMP ACTS
Two dedicated biological open spaces are recommended which will include 1.2 acres of the
higher quality Diegan Sage Scrub on-site in Area B, and protect habitat for both the Coastal Cactus
Wren and the California Gnatcatcher (see Figure 2). The California Adolphia will also be protected
within these areas. This western open space is 1.5 acres and is contiguous with high quality cactus
wren and gnatcatcher habitat off-site to the west. It also links the revegetated lands of the reservoir
with this sage scrub-dominated habitat (separated only by the existing paved road). A second easement
(Lot A) covers a steep north-facing slope with grassland habitat. No clearance of vegetation or other
forms of habitat and soil disturbance should occur within these dedicated areas with the exception of
the sewage pipes and storm drainage pipe.
As mitigation for the loss of fair to poor quality sage scrub (not within Open Space Log B),
0.3 acre of disturbed grassland in Lot B is recommended for revegetation and Diegan Sage Scrub. .
A rtemisia cali/arnica, Encelia cali/arnica, Eriaganum fascicu/atum, Dip/acus puniceus, and Salvia melli/era
should be the principal shrubby components of this revegetation. A three-year monitoring plan is
/-/,/-/f'
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PSBS #K80
15
further recommended to ensure the successful establishment of this scrub. The 0.3 acre constitutes the
entire area within Area B mapped as grassland. Completion of this revegetation program will mitigate
anticipated significant biological impacts from the project to a level of less than significant.
LITERATURE CITED
American Ornithologists' Union. 1983. Checklist of North American Birds, 6th Edition. American
Ornithologists' Union.
American Ornithologists' Union. 1989. Thirty-seventh Supplement to the American Ornithologists'
Union Checklist of North American Birds. Auk 106: 532-538.
Ashton, R. E., Jr. 1976. Endangered and Threatened Amphibians and Reptiles in the United States.
Soc. for the Study of Amphibians and Reptiles, Herpetology Circular No.5.
Atwood, J. L. 1990. Status Review of the California Gnatcatcher (Polioptila californica). Unpublished
Technical Report, Manomet Bird Observatory, Manomet, Massachuseus. 79 pp.
Beauchamp, R. M. 1986. A Flora of San Diego County, California. Sweetwater River Press, National
City, CA. 241 p.
Bowman, Roy H. 1973. Soil Survey of the San Diego Area, California, Part 1. U.S. Department of
Agriculture, Soil Conservation Service and Forest Service, in cooperation with the University
of California Agricultural Experiment Station, the U.S. Department of the Interior, Bureau of
Indian Affairs, the Department of the Navy, United States Marine Corps, the Department of
Housing and Urban Development, and the County of San Diego Planning Department.
December, 1973.
California Department of Fish and Game. 1990. Special Animals. California Natural Diversity Data
Base. April 1990.
California Department of Fish and Game. 1991a. Fish and Game Code of California, Gould
Publications, Altamonte Springs, Florida.
California Department of Fish and Game. 1991b. Special Animals. California Natural Diversity Data
Base. August 1991.
Collins, Joseph T. 1990. Standard Common and Current Scientific Names for North American
Amphibians and Reptiles (3rd ed.). The Society for the Study of Amphibians and Reptiles.
Herpetological Circular No. 19.
Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), 1976.
Everett, W. T. 1979. Threatened, Declining and Sensitive Bird Species in San Diego County.
Audubon Society Sketches. July 1979. 2-3.
Holland, Robert F, 1986. Preliminary Descriptions of the Terrestrial Natural Communities of
California. California Department of Fish and Game.
/,t.')..1f
04/08/93
plldftt SoILthmt IIlDIogtcAl Strvtw, ,.C.
PSBS #K80 16
International Union for the Conservation of Nature and Natural Resources. 1979. Red Data Book,
Vo!. 3: Amphibia and Reptilia.
Jameson, E.W., Jr. and Hans J. Peeters. 1988. California Mammals. University of California Press,
Berkeley, California.
Kennedy, Michael P. 1977. Geology of National City, Imperial Beach and Otay Mesa Quadrangles,
Southern San Diego Metropolitan Area, California. California Division of Mines and Geology.
Map Sheet 72.
Mayer, Kenneth E. and William F. Laudenslayer, Jr., editors. 1988. A Guide to Wildlife Habitats of
California. California Department of Forestry and Fire Protection,
Munz, P. A. 1974. A Flora of Southern California. University of California Press, Berkeley. 1086 p.
Pacific Southwest Biological Services, Inc. 1981. Report of a Biological Survey of the Various Tank
Sites W.O. A453.0. Prepared for Sweetwater Authority, Chula Vista, California. 18 March
1981.
Pacific Southwest Biological Services, Inc. 1989. Report of a Biological Assessment of the Lynndale
Hills Property. Assessor's Parcel Nos. 592-100-30 & 49. Prepared for Cameo Development
Company, San Diego, California. 21 August 1989 (Revised 8 March 1990).
Regional Environmental Consultants (RECON). 1982. Final Environmental Impact Report for the
Bonita Valley Reservoir. Prepared for the Sweetwater Authority, Chula Vista, California. May
3, 1982.
San Diego Herpetological Society. 1980. Survey and Status of Endangered and Threatened Species of
Reptiles Natively Occurring in San Diego County.
San Diego Non-Game Wildlife Subcommittee. 1976. Proposed List of Species and Habitats Requiring
Special Protection and Study in San Diego County. Memorandum to San Diego County
Environmental Quality Division.
Smith, James Payne, Jr., and Ken Berg. 1988. California Native Plant Society's Inventory of Rare and
Endangered Vascular Plants of California. Fourth Edition. Spec. Pub!. No. 1. September
1988.
U.S. Fish and Wildlife Service. 1986. Endangered and Threatened Wildlife and Plants. Code of Fed.
Regu!. Title 50, Part 17.11 and 17.12 (revised January I, 1986).
U.S. Fish and Wildlife Service. 1989. Endangered and Threatened Wildlife and Plants. Federal
Register Part IV, January 6, 1989.
U.S. Fish and Wildlife Service. 1991. Endangered and Threatened Wildlife and Plants; Animal
Candidate Review for Listing as Endangered or Threatened Species, Proposed Rule. 50 CFR
Part 17. Federal Register Part VIII, November 21, 1991.
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PSBS #K80 17
ApPENDIX 1. FLORAL CHECKLIST OF THE PROPOSED BONITA HILLS ESTATES.
HABITAT
D = Diegan Sage Scrub
x = Disturbed Annual Grassland
HABITAT
DICOTYLEDONS
Adoxaceae - Adoxus Family
Sambucus mexicana Presl ex DC. Desert Elderberry
D
Aizoaceae - Carpet-weed Family
* Carpobrotus edulis (L.)Bolus Hottentot-Fig
* Mesembryanthemum crystaUinum L. Crystal Ice Plant
x
X
Anacardiaceae - Sumac Family
Rhus integrifolia (Nutt.)Benth. & Hook. Lemonade Berry
· Schinus moUe L. Pepper-tree
D
X
Araliaceae - Ginseng Family
. Hedera helix L. English Ivy
X
Asteraceae - Sunflower Family
Artemisia californica Less. California Sagebrush
Baccharis salicifolia (R. & P .)Pers. Mule-fat
Baccharis sarothroides Gray Broom Baccharis
* Crntaurea melitensis L. T ocalote
* Conyza bonariensis (L.)Cronq. Flax-Leaf Fleabane
* Conyza canadensis (L.)Cronq. Horseweed
Encelia californica Nutt. California Encelia
* Encelia farinosa Gray ex Torr. Brittle-Bush
Filago californica Nutt. California Filago
Gnaphalium bicolor Bioletti Bicolor Cudweed
Hemizonia fasciculata (DC.)T. & G. Fascicled Tarweed
Heterotheca grandiflora Nutt. Telegraph Weed
* Hypochoeris glabra L. Smooth Cat's..,ars
Isocoma menziesii (Hook. & Arn.)Newsom var, mrnziesii
* Lactuca serriola L. Prickly Lettuce
* Silybum marianum (L.)Gaertn. Milk-thistle
Sonchus asper (L.)Hill Spiny-Leaf Sow-Thistle
Stephanomeria diegensis Gottlieb San Diego Wreath-Plant
Viguiera /aciniata Gray San Diego Sunflower
.
D
D
X
D,X
X
X
D
X
D
D
D
X
D,X
D
X
X
X
D
D
Boraginaceae - Borage Family
Amsinckia intermedia F. & M. Rancher's Fiddleneck
Cryptantha intermedia (Gray)Greene Nievitas
D
D
Brassicaceae - Mustard Family
* Brassica grniculata (Desf.)J. Ball Short-pod Mustard
* Raphanus sativus L. Wild Radish
* Sisymbrium irio L. London Rocket
X
X
X
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ApPENDIX 1. FLORAL CHECKLIST OF 1HE PROPOSED BONITA HILLS ESTATES
(CONTINUED)
HABITAT
Buxaceae
Simmondsia chinensis (Link)C.K. Schneid. Jojoba
D
Cactaceae - Cactus Family
Opuntia littoralis (Engelm.)Ckll. var. littoralis Coast Prickly-Pear
Opuntia prolifera Engelm. Coast Cholla
D
D
Caryophyllaceae - Pink Family
· Silene gallica L. Common Catchfly
x
Chenopodiaceae - Goosefoot Family
. Atriplex semibaccata R. Br. Australian Saltbush
. Salsola austra/is R. Br. Russian-thistle
x
X
Cucurbitaceae - Gourd Family
Marah macrocarpus (Greene)Greene Manroot, Wild-Cucumber
D
Euphorbiaceae - Spurge Family
Chamaesyce polycarpa (Benth.)Millsp. in Parish var. polycarpa Small-seed Sandmat
D
Fabaceae - Pea Family
· Acacia sp. (exotic)
Astragalus trichopodus ssp. leucopsis (T. & G,)Thorne Locoweed
· Meli/otus indicus (L.)All. Indian Sweet Clover
X
D
X
Geraniaceae - Geranium Family
· Erodium cicutarium (L.)L'Her. Red-stem Filaree
X
Hydrophyllaceae - Waterleaf Family
Phacelia cicutaria ssp. hispida (Gray)Beauch. Caterpillar Phacelia
D
Lamiaceae - Mint Family
. Marrubium vulgare L. Horehound
Salvia mellifera Greene Black Sage
X
D
Malvaceae - Mallow Family
Malacothamnus fasciculatus (Nutt.)Greene var. fasciculatus Mesa Bushmallow
D
Onagraceae - Evening-Primrose Family
Oenothera elata ssp, hirsutissima (Gray ex Wats.)Dietrich Great Marsh Evening-Primrose D
P1antaginaceae - Plantain Family
· Plantago lanceolata L. English Plantain
D
Polygonaceae - Buckwheat Family
Eriogonum fasciculatum Benth, ssp. fasciadatum Flat-top Buckwheat
D
/ ~ 1,5 - f
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PSBS #K80 19
ApPENDIX 1. FLORAL CHECKLIST OF THE PROPOSED BONITA HILLS ESTATES
(CONfINUED)
HABITAT
Primulaceae - Primrose Family
· Anagallis aruensis L. Scarlet Pimpernel
x
Rhamnaceae - Buckthorn Family
Adolphia cali/ornica Wats. California AdolplUa
D
Salicaceae - Willow Family
Salix lasiolepis var. bracelinae Ball Bracelin's Willow
D
Saxifragaceae - Saxifrage Family
Jepsonia parryi (Torr.)Small Coast Jepsonia
D
Scrophulariaceae - Figwort Family
Diplacus puniceus Nutt. ex Taylor Coast Bush Monkeyflower
D
Solanaceae - Nightshade Family
Datura wrightii Regel Western Jimsonweed
· Nicotiana glauca Grah. Tree Tobacco
x
X
Urticaceae - Nettle Family
· Urtica urens L. Dwarf Nettle
X
MONOCOTYLEDONS
Agavaceae - Agave Family
Yucca schidigera Roezl ex Ortgies Mojave Yucca
D
Poaceae - Grass Family
. A vena barbara L. Slender Oat
· Bromus diandrus Roth Ripgut Grass
· Bromus mollis L. Soft Chess
· Bromus rubens L. Red Brome
. Cortaderia dioica (Spreng.)Speg. Selloa Pampas-Grass
· Cynodon dactylon (L.)Pers. Bermuda Grass
Distichlis spicaea (L,)Greene Coastal Salt Grass
. Festuca (Vulpia) myuros L. Foxtail Fescue
· Hordeum murinum ssp. leponnum (Link)Arcang. Hare Barley
· Phalans minor Retz. Littleseed Canary Grass
· Poa annua L. Annual Bluegrass
. Polypogon monspeliensis (L,)Desf. Annual Beardgrass
X
X
D,X
D,X
X
X
X
D,X
X
X
X
X
· - Denotes non-native plant taxa
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20
ApPENDIX 2.
ANIMALS OBSERVED OR DETECTED ON THE PROPOSED BONITA HILLS
EsTATES.
HABITAT
D - Diegan Sage Scrub
F - Flyover
COMMON NAME
SCIENTIFIC NAME
NUMBER/MEANS
OF DETEcnON HABITAT
BIRDS
Phasianid3e (Quails, Pheasants, and Relatives)
California Quail Callipepla C4lifornicA
to
D
Columbid3e (pigeons and Doves)
Mourning Dove
Zenaida maCTOura
4
F
Trochilid3e (Hummingbirds)
Anna's Hummingbird
Calypte anna
3
o
Corvid2e (Jays, Magpies, and Crows)
Scrub Jay
Aphelocoma coerulescens
3
o
Troglodytid3e (Wrens)
Coastal Cactus Wren
Canyon Wren
Campylorhynchus brunneiC4pillus sandiegensis
Catherpes mexicAnus
6
2
D
D
Muscicapidae (Old World Warblers, Gnatcatchers, Kinglets, Thrushes, Bluebirds, and Wrentit)
California Gnatcatcher Polioptila californica 4
Wrentit Chamaea fasciata 4
D
D
Mimid3e (Mockingbirds and Thrashers)
Northern Mockingbird Mimus polyglottos
California Thrasher Toxo5toma redivivum
2
3
D
D
Emberizid2e (Warblers, Sparrows, Blackbirds and Relatives)
Black-headed Grosbeak Pheucticus melanocephalus
California Towhee Pipilo crissalis
Rufous-sided Towhee Pipilo erythrophthalmus
I
12
2
D
D
D
Fringillid3e (Finches)
House Finch
Lesser Goldfinch
Carpodacus mexicAnus
Carduelis psaltTia
10
2
D
D
MAMMALs
Leporid3e (Rabbits and Hares)
Desert Cottontail
Sylvilagus audubonii
2
D
Canidae (Foxes, Wolves, and Relatives)
Coyote Canis IatTans
Scat
D
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