BBS Route · Texas · BCR 37
Petronila Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 84 species recorded across 38 survey years, still active.
84Species Recorded
38Years Surveyed
1968–2024Span
5Observers
Bird Species Found on Texas Petronila
Top 40 of 84 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Red-winged Blackbird | Icteridae | 218 | 2024 | -5% | 1970 | |
| Laughing Gull | Laridae | 180 | 2024 | +362% | 1970 | |
| Great-tailed Grackle | Icteridae | 118 | 2024 | +168% | 1970 | |
| Dickcissel | Cardinalidae | 64 | 2024 | -49% | 1970 | |
| Cliff Swallow | Hirundinidae | 50 | 2024 | 11× | 1999 | |
| Crested Caracara | Falconidae | 34 | 2022 | +617% | 2001 | |
| Common Nighthawk | Caprimulgidae | 30 | 2024 | -54% | 1970 | |
| European Starling | Sturnidae | 28 | 2024 | +350% | 2009 | |
| Mourning Dove | Columbidae | 27 | 2024 | +15% | 1970 | |
| Cave Swallow | Hirundinidae | 20 | 2024 | -23% | 2012 | |
| Eastern Meadowlark | Icteridae | 11 | 2024 | +233% | 1971 | |
| Fulvous Whistling-Duck | Anatidae | 10 | 2019 | +188% | 1976 | |
| Northern Mockingbird | Mimidae | 10 | 2024 | -54% | 1970 | |
| Black-bellied Whistling-Duck | Anatidae | 8 | 2023 | +320% | 1972 | |
| Painted Bunting | Cardinalidae | 8 | 2024 | -48% | 1970 | |
| Anhinga | Anhingidae | 8 | 1975 | n/a | n/a | |
| Double-crested Cormorant | Phalacrocoracidae | 7 | 2016 | n/a | n/a | |
| Scissor-tailed Flycatcher | Tyrannidae | 6 | 2024 | +25% | 1970 | |
| Brown-headed Cowbird | Icteridae | 5 | 2022 | -39% | 1970 | |
| Willet | Scolopacidae | 5 | 2021 | n/a | n/a | |
| White-faced Ibis | Threskiornithidae | 4 | 2015 | +39% | 1975 | |
| Ash-throated Flycatcher | Tyrannidae | 4 | 2006 | +100% | 1999 | |
| Snowy Egret | Ardeidae | 3 | 2021 | +100% | 1976 | |
| Black-necked Stilt | Recurvirostridae | 3 | 2019 | +75% | 1972 | |
| Rock Pigeon | Columbidae | 3 | 2023 | -38% | 1971 | |
| Lark Sparrow | Passerellidae | 3 | 2018 | -93% | 1970 | |
| Tricolored Heron | Ardeidae | 3 | 2019 | +200% | 1975 | |
| Roseate Spoonbill | Threskiornithidae | 3 | 2021 | +200% | 2003 | |
| Western Cattle-Egret | Ardeidae | 2 | 2021 | -76% | 1972 | |
| Killdeer | Charadriidae | 2 | 2024 | -38% | 1970 | |
| Turkey Vulture | Cathartidae | 2 | 2024 | -67% | 1970 | |
| Horned Lark | Alaudidae | 2 | 2023 | -97% | 1970 | |
| Purple Martin | Hirundinidae | 2 | 2021 | -27% | 1990 | |
| Green Heron | Ardeidae | 2 | 1992 | +33% | 1974 | |
| American Coot | Rallidae | 2 | 1970 | n/a | n/a | |
| Gull-billed Tern | Laridae | 2 | 1999 | +0% | 1995 | |
| Cassin's Sparrow | Passerellidae | 2 | 2014 | +50% | 1978 | |
| Mottled Duck | Anatidae | 2 | 2023 | +58% | 1975 | |
| Great Egret | Ardeidae | 2 | 2021 | -29% | 1976 | |
| Lesser Nighthawk | Caprimulgidae | 2 | 2024 | +200% | 1990 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.