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BBS Route · Texas · BCR 35

Black Gap Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 67 species recorded across 26 survey years, still active.

67Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1988–2023Span
4Observers

Bird Species Found on Texas Black Gap

Top 40 of 67 species by most recent count. Each links to its species trend.

Species recorded on the Black Gap 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
Mourning DoveColumbidae582023+75%1990
Scaled QuailOdontophoridae392023+38%1990
Black-throated SparrowPasserellidae382023+7%1990
Northern MockingbirdMimidae362023-12%1990
Cactus WrenTroglodytidae322023+69%1990
Ash-throated FlycatcherTyrannidae202023+83%1990
PyrrhuloxiaCardinalidae202023-12%1990
Scott's OrioleIcteridae172023+21%1990
Northern CardinalCardinalidae172023+588%1990
House FinchFringillidae152023-35%1990
Northern Rough-winged SwallowHirundinidae122019+279%1990
Cassin's SparrowPasserellidae112023+46%1995
Turkey VultureCathartidae62023-64%1990
Western MeadowlarkIcteridae61998+500%1988
White-winged DoveColumbidae52023-73%1992
Greater RoadrunnerCuculidae52023-43%1990
Lesser NighthawkCaprimulgidae52023+64%1990
Blue GrosbeakCardinalidae52023-68%1990
Loggerhead ShrikeLaniidae52022+0%1996
Canyon WrenTroglodytidae42023+11%1990
Common NighthawkCaprimulgidae32022-33%1993
Cliff SwallowHirundinidae32014-58%1990
Black-tailed GnatcatcherPolioptilidae32023-83%1990
Yellow-billed CuckooCuculidae31992n/an/a
Swainson's HawkAccipitridae31998n/an/a
Red-tailed HawkAccipitridae22022-50%1990
Say's PhoebeTyrannidae22017-82%1992
Bronzed CowbirdIcteridae22013-25%1990
Canyon TowheePasserellidae22023-45%1992
Barn SwallowHirundinidae22014-50%1990
Crissal ThrasherMimidae22014+50%1993
Ladder-backed WoodpeckerPicidae22023-39%1992
Hooded OrioleIcteridae22018-57%2010
Rufous-crowned SparrowPasserellidae22022+25%2014
Black PhoebeTyrannidae22004n/an/a
MallardAnatidae22023+0%2013
Eurasian Collared-DoveColumbidae22023+0%2018
Great Blue HeronArdeidae22019n/an/a
Great Horned OwlStrigidae12023+25%2011
Common PoorwillCaprimulgidae12013+0%1988

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