BirdAnalyst
BBS Route · Texas · BCR 35

Cornudas Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 54 species recorded across 29 survey years, still active.

54Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2018Span
9Observers

Bird Species Found on Texas Cornudas

Top 40 of 54 species by most recent count. Each links to its species trend.

Species recorded on the Cornudas route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Ash-throated FlycatcherTyrannidae332018+338%1971
Northern MockingbirdMimidae262018+18%1970
Black-throated SparrowPasserellidae212018-44%1970
Mourning DoveColumbidae172018+442%1970
Cassin's KingbirdTyrannidae162015+29%1971
House FinchFringillidae112018+3%1970
Loggerhead ShrikeLaniidae112018-8%1970
House SparrowPasseridae102015-4%1972
Turkey VultureCathartidae82018+57%1970
Western MeadowlarkIcteridae82018+143%1970
Western KingbirdTyrannidae72018+91%1970
Cactus WrenTroglodytidae72018-34%1970
Common NighthawkCaprimulgidae72018-7%1971
Scaled QuailOdontophoridae62018+31%1970
Scott's OrioleIcteridae62018-27%1970
Curve-billed ThrasherMimidae62018+0%1970
Cassin's SparrowPasserellidae62018-73%1975
Red-tailed HawkAccipitridae52018+13%1970
Swainson's HawkAccipitridae42018+233%1970
Lark SparrowPasserellidae42015+0%1974
Blue GrosbeakCardinalidae42018+125%1975
PyrrhuloxiaCardinalidae42018-13%1999
American KestrelFalconidae32018+60%1971
Chihuahuan RavenCorvidae32018+400%1971
Great Horned OwlStrigidae22003-29%1975
Lesser NighthawkCaprimulgidae22015-75%1975
Northern HarrierAccipitridae21973n/an/a
Brown-headed CowbirdIcteridae22018+0%1978
Burrowing OwlStrigidae22006+50%1984
Bullock's OrioleIcteridae22018+33%2005
Lesser GoldfinchFringillidae22018+100%1999
VerdinRemizidae22006+0%2003
Broad-tailed HummingbirdTrochilidae22006n/an/a
Western Wood-PeweeTyrannidae22006n/an/a
Eurasian Collared-DoveColumbidae22018n/an/a
KilldeerCharadriidae12003-50%1992
Greater RoadrunnerCuculidae12018+0%1992
Ladder-backed WoodpeckerPicidae12018+75%1974
Horned LarkAlaudidae11999-77%1970
Violet-green SwallowHirundinidae11968n/an/a

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.