BBS Route · California · BCR 33
Darwin Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 37 species recorded across 15 survey years, still active.
37Species Recorded
15Years Surveyed
1991–2012Span
3Observers
Bird Species Found on California Darwin
Top 37 of 37 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Black-throated Sparrow | Passerellidae | 14 | 2012 | -58% | 1993 | |
| House Sparrow | Passeridae | 13 | 2012 | +107% | 1995 | |
| Northern Mockingbird | Mimidae | 12 | 2005 | -43% | 1995 | |
| European Starling | Sturnidae | 9 | 2005 | +350% | 1995 | |
| Horned Lark | Alaudidae | 8 | 2005 | -52% | 1993 | |
| House Finch | Fringillidae | 6 | 2012 | -57% | 1993 | |
| Gambel's Quail | Odontophoridae | 5 | 2005 | n/a | n/a | |
| Western Kingbird | Tyrannidae | 4 | 2012 | +178% | 1993 | |
| Ash-throated Flycatcher | Tyrannidae | 4 | 2012 | -55% | 1993 | |
| Sage Thrasher | Mimidae | 4 | 2001 | +100% | 1993 | |
| Say's Phoebe | Tyrannidae | 3 | 2005 | -33% | 1993 | |
| Chukar | Phasianidae | 3 | 2005 | -67% | 1998 | |
| Bewick's Wren | Troglodytidae | 3 | 1998 | +200% | 1993 | |
| White-throated Swift | Apodidae | 2 | 2012 | +20% | 1995 | |
| Common Raven | Corvidae | 2 | 2012 | -50% | 1993 | |
| Loggerhead Shrike | Laniidae | 2 | 2004 | +0% | 1995 | |
| Great-tailed Grackle | Icteridae | 2 | 2004 | +100% | 1998 | |
| Golden Eagle | Accipitridae | 2 | 1999 | n/a | n/a | |
| Eurasian Collared-Dove | Columbidae | 2 | 2012 | n/a | n/a | |
| Mourning Dove | Columbidae | 1 | 2012 | +156% | 1993 | |
| Rock Wren | Troglodytidae | 1 | 2012 | -80% | 1993 | |
| Verdin | Remizidae | 1 | 1991 | n/a | n/a | |
| Blue-gray Gnatcatcher | Polioptilidae | 1 | 2005 | -50% | 1995 | |
| Red-tailed Hawk | Accipitridae | 1 | 2012 | -25% | 1995 | |
| Brown-headed Cowbird | Icteridae | 1 | 2001 | -33% | 1993 | |
| Scott's Oriole | Icteridae | 1 | 2004 | +50% | 1993 | |
| Brewer's Sparrow | Passerellidae | 1 | 2005 | -50% | 1992 | |
| Costa's Hummingbird | Trochilidae | 1 | 2005 | -43% | 1998 | |
| LeConte's Thrasher | Mimidae | 1 | 2012 | +150% | 2000 | |
| Turkey Vulture | Cathartidae | 1 | 1995 | n/a | n/a | |
| Phainopepla | Ptiliogonatidae | 1 | 2005 | +0% | 1999 | |
| Cactus Wren | Troglodytidae | 1 | 2012 | +67% | 1998 | |
| Prairie Falcon | Falconidae | 1 | 2012 | +0% | 1996 | |
| Rock Pigeon | Columbidae | 1 | 2000 | -50% | 1997 | |
| American Kestrel | Falconidae | 1 | 2005 | +0% | 2000 | |
| Burrowing Owl | Strigidae | 1 | 2001 | n/a | n/a | |
| Great Blue Heron | Ardeidae | 1 | 2012 | n/a | n/a |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.