BBS Route · California · BCR 32
Colma Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 74 species recorded across 5 survey years, no longer active.
74Species Recorded
5Years Surveyed
1968–1972Span
1Observers
Bird Species Found on California Colma
Top 40 of 74 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| House Finch | Fringillidae | 265 | 1972 | -19% | 1969 | |
| Brewer's Blackbird | Icteridae | 175 | 1972 | +50% | 1969 | |
| California Scrub-Jay | Corvidae | 115 | 1972 | +44% | 1969 | |
| Chestnut-backed Chickadee | Paridae | 107 | 1972 | -5% | 1969 | |
| California Towhee | Passerellidae | 94 | 1972 | +4% | 1969 | |
| Red-winged Blackbird | Icteridae | 58 | 1972 | +75% | 1970 | |
| European Starling | Sturnidae | 56 | 1972 | 11× | 1969 | |
| Spotted Towhee | Passerellidae | 41 | 1972 | +13% | 1969 | |
| House Sparrow | Passeridae | 41 | 1972 | -11% | 1969 | |
| Mourning Dove | Columbidae | 40 | 1972 | +6% | 1969 | |
| Pine Siskin | Fringillidae | 38 | 1972 | -45% | 1969 | |
| California Quail | Odontophoridae | 32 | 1972 | -47% | 1969 | |
| Lesser Goldfinch | Fringillidae | 30 | 1972 | +11% | 1969 | |
| White-crowned Sparrow | Passerellidae | 30 | 1972 | +51% | 1969 | |
| Oak Titmouse | Paridae | 24 | 1972 | +34% | 1969 | |
| Bushtit | Aegithalidae | 24 | 1972 | -58% | 1969 | |
| Northern Mockingbird | Mimidae | 23 | 1972 | +242% | 1969 | |
| Cliff Swallow | Hirundinidae | 22 | 1972 | -84% | 1969 | |
| Bewick's Wren | Troglodytidae | 18 | 1972 | -65% | 1969 | |
| Acorn Woodpecker | Picidae | 17 | 1972 | +82% | 1969 | |
| Wrentit | Sylviidae | 17 | 1972 | -41% | 1969 | |
| Steller's Jay | Corvidae | 14 | 1972 | +150% | 1969 | |
| Song Sparrow | Passerellidae | 12 | 1972 | +9% | 1969 | |
| Western Gull | Laridae | 11 | 1972 | -85% | 1969 | |
| Western Meadowlark | Icteridae | 11 | 1972 | +81% | 1969 | |
| Anna's Hummingbird | Trochilidae | 10 | 1972 | +15% | 1969 | |
| California Thrasher | Mimidae | 10 | 1971 | +400% | 1968 | |
| American Robin | Turdidae | 10 | 1972 | -18% | 1969 | |
| Killdeer | Charadriidae | 9 | 1972 | +50% | 1970 | |
| Black-headed Grosbeak | Cardinalidae | 8 | 1972 | +29% | 1969 | |
| Purple Finch | Fringillidae | 7 | 1972 | +190% | 1969 | |
| Caspian Tern | Laridae | 6 | 1972 | -11% | 1969 | |
| Ash-throated Flycatcher | Tyrannidae | 6 | 1972 | +0% | 1969 | |
| Allen's Hummingbird | Trochilidae | 6 | 1972 | +50% | 1970 | |
| Mallard | Anatidae | 5 | 1972 | +340% | 1969 | |
| Hutton's Vireo | Vireonidae | 5 | 1972 | -38% | 1969 | |
| Orange-crowned Warbler | Parulidae | 5 | 1972 | +80% | 1969 | |
| Western Wood-Pewee | Tyrannidae | 4 | 1972 | +0% | 1969 | |
| Western Tanager | Cardinalidae | 4 | 1968 | n/a | n/a | |
| Loggerhead Shrike | Laniidae | 4 | 1968 | n/a | n/a |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.