BBS Route · California · BCR 33
Essex Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 31 species recorded across 8 survey years, still active.
31Species Recorded
8Years Surveyed
1988–1996Span
4Observers
Bird Species Found on California Essex
Top 31 of 31 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Black-throated Sparrow | Passerellidae | 31 | 1996 | -24% | 1992 | |
| Cactus Wren | Troglodytidae | 9 | 1996 | -7% | 1991 | |
| Horned Lark | Alaudidae | 5 | 1996 | -21% | 1991 | |
| Verdin | Remizidae | 5 | 1996 | -27% | 1989 | |
| Common Raven | Corvidae | 5 | 1995 | -25% | 1991 | |
| House Finch | Fringillidae | 4 | 1992 | +300% | 1989 | |
| Gambel's Quail | Odontophoridae | 3 | 1996 | +71% | 1992 | |
| Mourning Dove | Columbidae | 3 | 1996 | -67% | 1992 | |
| Ash-throated Flycatcher | Tyrannidae | 3 | 1996 | -67% | 1991 | |
| Loggerhead Shrike | Laniidae | 3 | 1993 | -17% | 1991 | |
| Black-tailed Gnatcatcher | Polioptilidae | 3 | 1989 | n/a | n/a | |
| Ladder-backed Woodpecker | Picidae | 2 | 1991 | +100% | 1988 | |
| Greater Roadrunner | Cuculidae | 2 | 1994 | +50% | 1991 | |
| Western Meadowlark | Icteridae | 2 | 1995 | +100% | 1992 | |
| Turkey Vulture | Cathartidae | 1 | 1994 | +0% | 1988 | |
| Red-tailed Hawk | Accipitridae | 1 | 1989 | +0% | 1988 | |
| Prairie Falcon | Falconidae | 1 | 1988 | n/a | n/a | |
| White-throated Swift | Apodidae | 1 | 1988 | n/a | n/a | |
| Western Kingbird | Tyrannidae | 1 | 1996 | -67% | 1988 | |
| Say's Phoebe | Tyrannidae | 1 | 1996 | -50% | 1988 | |
| Brown-headed Cowbird | Icteridae | 1 | 1988 | n/a | n/a | |
| House Sparrow | Passeridae | 1 | 1993 | -67% | 1988 | |
| Bullock's Oriole | Icteridae | 1 | 1996 | +0% | 1989 | |
| LeConte's Thrasher | Mimidae | 1 | 1996 | -56% | 1993 | |
| Scott's Oriole | Icteridae | 1 | 1995 | +0% | 1991 | |
| European Starling | Sturnidae | 1 | 1995 | +0% | 1992 | |
| Northern Mockingbird | Mimidae | 1 | 1996 | +0% | 1993 | |
| Cassin's Kingbird | Tyrannidae | 1 | 1994 | n/a | n/a | |
| Hooded Oriole | Icteridae | 1 | 1996 | n/a | n/a | |
| Phainopepla | Ptiliogonatidae | 1 | 1996 | n/a | n/a | |
| Bewick's Wren | Troglodytidae | 1 | 1996 | n/a | n/a |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.