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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 27 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 →
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 →
1988–2025Span
5Observers

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
Black-throated SparrowPasserellidae642025+18%1990
Cactus WrenTroglodytidae472025+88%1990
Scaled QuailOdontophoridae352025+46%1990
Ash-throated FlycatcherTyrannidae212025+76%1990
Scott's OrioleIcteridae202025+36%1990
PyrrhuloxiaCardinalidae182025-10%1990
Lesser NighthawkCaprimulgidae152025+191%1990
House FinchFringillidae152025-21%1990
Cassin's SparrowPasserellidae112023+46%1995
Northern MockingbirdMimidae112025-22%1990
Turkey VultureCathartidae92025-60%1990
Canyon WrenTroglodytidae82025+17%1990
Common NighthawkCaprimulgidae62025+22%1993
Western MeadowlarkIcteridae61998+500%1988
White-winged DoveColumbidae52023-73%1992
Mourning DoveColumbidae42025+60%1990
Bell's VireoVireonidae42025-86%1990
Rock WrenTroglodytidae42025-40%1990
Lesser GoldfinchFringillidae32025-29%1996
Northern CardinalCardinalidae32025+413%1990
Cliff SwallowHirundinidae32014-58%1990
VerdinRemizidae32025-89%1990
Black-tailed GnatcatcherPolioptilidae32025-81%1990
Yellow-billed CuckooCuculidae31992n/an/a
Loggerhead ShrikeLaniidae32025+0%1996
Swainson's HawkAccipitridae31998n/an/a
Great Horned OwlStrigidae22025+25%2011
Greater RoadrunnerCuculidae22025-43%1990
Say's PhoebeTyrannidae22025-77%1992
Common RavenCorvidae22025-77%1990
Brown-headed CowbirdIcteridae22025-98%1990
Bronzed CowbirdIcteridae22013-25%1990
Canyon TowheePasserellidae22023-45%1992
Barn SwallowHirundinidae22014-50%1990
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

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.