BBS Route · California · BCR 32
Bartlett Sps Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 112 species recorded across 32 survey years, still active.
112Species Recorded
32Years Surveyed
1972–2018Span
4Observers
Bird Species Found on California Bartlett Sps
Top 40 of 112 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Spotted Towhee | Passerellidae | 57 | 2018 | +87% | 1974 | |
| Lesser Goldfinch | Fringillidae | 38 | 2018 | +204% | 1974 | |
| Black-headed Grosbeak | Cardinalidae | 33 | 2018 | +81% | 1974 | |
| Wrentit | Sylviidae | 29 | 2018 | +280% | 1974 | |
| Western Grebe | Podicipedidae | 29 | 2018 | +75% | 1988 | |
| Mountain Quail | Odontophoridae | 23 | 2018 | +13% | 1974 | |
| Ash-throated Flycatcher | Tyrannidae | 22 | 2018 | +48% | 1974 | |
| California Quail | Odontophoridae | 21 | 2018 | +91% | 1974 | |
| Red-winged Blackbird | Icteridae | 20 | 2018 | +367% | 1974 | |
| Orange-crowned Warbler | Parulidae | 19 | 2018 | +216% | 1975 | |
| Acorn Woodpecker | Picidae | 18 | 2018 | -45% | 1974 | |
| Barn Swallow | Hirundinidae | 18 | 2018 | +467% | 1974 | |
| Steller's Jay | Corvidae | 17 | 2018 | +44% | 1974 | |
| Brewer's Blackbird | Icteridae | 17 | 2018 | -39% | 1974 | |
| European Starling | Sturnidae | 16 | 2018 | -59% | 1974 | |
| Bullock's Oriole | Icteridae | 14 | 2018 | -5% | 1974 | |
| California Towhee | Passerellidae | 14 | 2018 | +73% | 1974 | |
| Western Tanager | Cardinalidae | 14 | 2018 | -18% | 1974 | |
| Bushtit | Aegithalidae | 13 | 2018 | +255% | 1974 | |
| Blue-gray Gnatcatcher | Polioptilidae | 13 | 2018 | +920% | 1975 | |
| Cassin's Vireo | Vireonidae | 13 | 2018 | +54% | 1976 | |
| California Scrub-Jay | Corvidae | 12 | 2018 | -56% | 1974 | |
| Bewick's Wren | Troglodytidae | 12 | 2018 | +59% | 1974 | |
| Cliff Swallow | Hirundinidae | 11 | 2018 | -69% | 1974 | |
| Red-breasted Nuthatch | Sittidae | 11 | 2018 | +400% | 1975 | |
| Black-throated Gray Warbler | Parulidae | 11 | 2018 | -8% | 1975 | |
| Rock Pigeon | Columbidae | 11 | 2006 | +129% | 1983 | |
| Northern House Wren | Troglodytidae | 10 | 2018 | +113% | 1974 | |
| House Finch | Fringillidae | 9 | 2018 | -32% | 1974 | |
| Oak Titmouse | Paridae | 8 | 2018 | -21% | 1974 | |
| Turkey Vulture | Cathartidae | 7 | 2018 | +13% | 1974 | |
| Western Meadowlark | Icteridae | 7 | 2018 | -50% | 1974 | |
| Nashville Warbler | Parulidae | 7 | 2018 | -34% | 1974 | |
| Northern Mockingbird | Mimidae | 7 | 2018 | +600% | 1983 | |
| Eurasian Collared-Dove | Columbidae | 7 | 2018 | +333% | 2015 | |
| Western Kingbird | Tyrannidae | 6 | 2018 | -32% | 1974 | |
| House Sparrow | Passeridae | 6 | 2018 | +14% | 1975 | |
| Mourning Dove | Columbidae | 5 | 2018 | -53% | 1974 | |
| Western Wood-Pewee | Tyrannidae | 5 | 2018 | -77% | 1974 | |
| Warbling Vireo | Vireonidae | 5 | 2017 | +27% | 1974 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.