BBS Route · Texas · BCR 35
Castolon Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 66 species recorded across 28 survey years, still active.
66Species Recorded
28Years Surveyed
1994–2024Span
3Observers
Bird Species Found on Texas Castolon
Top 40 of 66 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Cactus Wren | Troglodytidae | 25 | 2024 | -32% | 1996 | |
| Pyrrhuloxia | Cardinalidae | 21 | 2024 | -6% | 1996 | |
| Black-throated Sparrow | Passerellidae | 20 | 2024 | -38% | 1996 | |
| Turkey Vulture | Cathartidae | 15 | 2024 | +21% | 1996 | |
| Ash-throated Flycatcher | Tyrannidae | 10 | 2024 | -54% | 1996 | |
| Northern Mockingbird | Mimidae | 10 | 2024 | -57% | 1996 | |
| Lesser Nighthawk | Caprimulgidae | 8 | 2024 | -76% | 1996 | |
| Loggerhead Shrike | Laniidae | 8 | 2019 | +533% | 2001 | |
| House Finch | Fringillidae | 5 | 2024 | -48% | 1996 | |
| Bell's Vireo | Vireonidae | 5 | 2024 | -52% | 1996 | |
| Canyon Wren | Troglodytidae | 5 | 2024 | +114% | 1996 | |
| Mourning Dove | Columbidae | 4 | 2024 | -20% | 1996 | |
| Painted Bunting | Cardinalidae | 4 | 2018 | +240% | 1996 | |
| Verdin | Remizidae | 4 | 2024 | -53% | 1996 | |
| Northern Cardinal | Cardinalidae | 4 | 2024 | -35% | 1997 | |
| White-winged Dove | Columbidae | 3 | 2024 | -86% | 1996 | |
| Blue Grosbeak | Cardinalidae | 3 | 2024 | +171% | 1996 | |
| Eurasian Collared-Dove | Columbidae | 3 | 2018 | +50% | 2011 | |
| Scaled Quail | Odontophoridae | 2 | 2024 | +9% | 1996 | |
| Red-tailed Hawk | Accipitridae | 2 | 2019 | +25% | 2000 | |
| Scott's Oriole | Icteridae | 2 | 2024 | -83% | 1996 | |
| Cliff Swallow | Hirundinidae | 2 | 2015 | +57% | 1997 | |
| Bewick's Wren | Troglodytidae | 2 | 2024 | -53% | 1997 | |
| Lesser Goldfinch | Fringillidae | 2 | 2016 | -25% | 2008 | |
| Cassin's Kingbird | Tyrannidae | 2 | 1998 | n/a | n/a | |
| Crissal Thrasher | Mimidae | 2 | 2018 | +0% | 2004 | |
| Inca Dove | Columbidae | 2 | 2004 | +0% | 1999 | |
| Peregrine Falcon | Falconidae | 2 | 2009 | +100% | 2004 | |
| Greater Roadrunner | Cuculidae | 1 | 2023 | +50% | 1996 | |
| Ladder-backed Woodpecker | Picidae | 1 | 2018 | -40% | 1998 | |
| Say's Phoebe | Tyrannidae | 1 | 2024 | -75% | 1996 | |
| Common Raven | Corvidae | 1 | 2023 | -50% | 1998 | |
| Brown-headed Cowbird | Icteridae | 1 | 2024 | -76% | 1996 | |
| Rufous-crowned Sparrow | Passerellidae | 1 | 2024 | -51% | 1996 | |
| Canyon Towhee | Passerellidae | 1 | 2024 | -67% | 1996 | |
| Varied Bunting | Cardinalidae | 1 | 2018 | -57% | 1996 | |
| Summer Tanager | Cardinalidae | 1 | 2018 | -36% | 1997 | |
| Phainopepla | Ptiliogonatidae | 1 | 2001 | +0% | 1994 | |
| Yellow-breasted Chat | Icteriidae | 1 | 2024 | -94% | 1996 | |
| Rock Wren | Troglodytidae | 1 | 2024 | +267% | 1996 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.