BBS Route · California · BCR 32
Glen Ellen Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 108 species recorded across 30 survey years, no longer active.
108Species Recorded
30Years Surveyed
1972–2004Span
3Observers
Bird Species Found on California Glen Ellen
Top 40 of 108 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| House Finch | Fringillidae | 34 | 2004 | -64% | 1974 | |
| Orange-crowned Warbler | Parulidae | 30 | 2004 | -28% | 1974 | |
| Violet-green Swallow | Hirundinidae | 22 | 2004 | -54% | 1974 | |
| Spotted Towhee | Passerellidae | 20 | 2004 | -52% | 1974 | |
| Western Bluebird | Turdidae | 20 | 2004 | -8% | 1974 | |
| European Starling | Sturnidae | 17 | 2004 | +13% | 1974 | |
| Oak Titmouse | Paridae | 16 | 2004 | -17% | 1974 | |
| Chestnut-backed Chickadee | Paridae | 16 | 2004 | -61% | 1974 | |
| Turkey Vulture | Cathartidae | 14 | 2004 | +8% | 1974 | |
| Black-headed Grosbeak | Cardinalidae | 12 | 2004 | -35% | 1974 | |
| Steller's Jay | Corvidae | 11 | 2004 | +6% | 1974 | |
| California Quail | Odontophoridae | 10 | 2004 | -41% | 1974 | |
| Acorn Woodpecker | Picidae | 10 | 2004 | +58% | 1974 | |
| California Scrub-Jay | Corvidae | 10 | 2004 | -33% | 1974 | |
| Lesser Goldfinch | Fringillidae | 9 | 2004 | -85% | 1974 | |
| American Crow | Corvidae | 8 | 2004 | -54% | 1974 | |
| American Robin | Turdidae | 8 | 2004 | -28% | 1974 | |
| Purple Martin | Hirundinidae | 8 | 1997 | +83% | 1994 | |
| Anna's Hummingbird | Trochilidae | 7 | 2004 | -59% | 1974 | |
| Cliff Swallow | Hirundinidae | 7 | 2004 | +22% | 1974 | |
| Warbling Vireo | Vireonidae | 7 | 2004 | -26% | 1974 | |
| American Goldfinch | Fringillidae | 7 | 2004 | +300% | 1991 | |
| Common Raven | Corvidae | 6 | 2004 | +86% | 1976 | |
| Cassin's Vireo | Vireonidae | 6 | 2004 | -31% | 1974 | |
| Downy Woodpecker | Picidae | 5 | 2002 | +120% | 1975 | |
| Red-winged Blackbird | Icteridae | 5 | 2004 | -62% | 1974 | |
| Northern Rough-winged Swallow | Hirundinidae | 5 | 2002 | -56% | 1974 | |
| Bewick's Wren | Troglodytidae | 5 | 2004 | -76% | 1974 | |
| Wrentit | Sylviidae | 5 | 2004 | -75% | 1974 | |
| Band-tailed Pigeon | Columbidae | 5 | 2004 | +18% | 1978 | |
| Mourning Dove | Columbidae | 4 | 2004 | -75% | 1974 | |
| Nuttall's Woodpecker | Picidae | 4 | 2004 | -18% | 1974 | |
| Black Phoebe | Tyrannidae | 4 | 2004 | -36% | 1974 | |
| Olive-sided Flycatcher | Tyrannidae | 4 | 2004 | -74% | 1974 | |
| Black-throated Gray Warbler | Parulidae | 4 | 2003 | -29% | 1974 | |
| Cedar Waxwing | Bombycillidae | 4 | 1991 | -46% | 1985 | |
| Mallard | Anatidae | 4 | 1996 | +180% | 1980 | |
| American Kestrel | Falconidae | 3 | 1997 | +17% | 1975 | |
| Western Kingbird | Tyrannidae | 3 | 2003 | -33% | 1974 | |
| Ash-throated Flycatcher | Tyrannidae | 3 | 2004 | -77% | 1974 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.