BirdAnalyst
BBS Route · Texas · BCR 35

Chisos Basin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 76 species recorded across 27 survey years, still active.

76Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2024Span
3Observers

Bird Species Found on Texas Chisos Basin

Top 40 of 76 species by most recent count. Each links to its species trend.

Species recorded on the Chisos Basin 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
Northern MockingbirdMimidae402024-28%1997
Cactus WrenTroglodytidae222024-25%1997
PyrrhuloxiaCardinalidae152024-16%1997
Ash-throated FlycatcherTyrannidae142024-37%1997
Black-throated SparrowPasserellidae142024-43%1997
Scaled QuailOdontophoridae102024+105%1997
Loggerhead ShrikeLaniidae92019+160%2000
Turkey VultureCathartidae82024-61%1997
Mexican JayCorvidae82024-4%1997
Scott's OrioleIcteridae72024-52%1997
Rufous-crowned SparrowPasserellidae62024-37%1997
Blue GrosbeakCardinalidae62024-24%1997
Canyon WrenTroglodytidae62019+25%1997
Northern CardinalCardinalidae62024+60%1999
Brown-headed CowbirdIcteridae52019-89%1997
Canyon TowheePasserellidae52023-78%1997
Black-crested TitmouseParidae52024-4%1997
Cassin's SparrowPasserellidae52023+33%2004
Say's PhoebeTyrannidae32024-54%1997
Cliff SwallowHirundinidae32024-55%1997
Bewick's WrenTroglodytidae32024-54%1997
Greater RoadrunnerCuculidae22024+133%1997
Common RavenCorvidae22024-58%1999
House FinchFringillidae22024+9%1997
Spotted TowheePasserellidae22024-73%1997
Blue-gray GnatcatcherPolioptilidae22024-58%1997
Black-headed GrosbeakCardinalidae22023-9%1999
Curve-billed ThrasherMimidae22023-43%1998
Acorn WoodpeckerPicidae22023+333%2000
Hutton's VireoVireonidae22009+100%1997
Crissal ThrasherMimidae22024+67%2008
BushtitAegithalidae22018-70%2000
Black-chinned HummingbirdTrochilidae22017+100%2006
Lesser GoldfinchFringillidae22017+100%2000
Chihuahuan MeadowlarkIcteridae22004n/an/a
Chihuahuan RavenCorvidae22008n/an/a
Mourning DoveColumbidae12024-35%1998
White-winged DoveColumbidae12024-43%1997
Red-tailed HawkAccipitridae12024-57%2000
Ladder-backed WoodpeckerPicidae12023+60%1997

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