BirdAnalyst
BBS Route · Texas · BCR 35

Comstock Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 87 species recorded across 47 survey years, still active.

87Species 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 →
47Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2025Span
7Observers

Bird Species Found on Texas Comstock

Top 40 of 87 species by most recent count. Each links to its species trend.

Species recorded on the Comstock 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
Turkey VultureCathartidae442025+61%1969
Black-throated SparrowPasserellidae442025-17%1969
Northern MockingbirdMimidae422025-46%1969
Mourning DoveColumbidae382025+25%1969
Painted BuntingCardinalidae362025+190%1969
Scaled QuailOdontophoridae272025-51%1969
Bewick's WrenTroglodytidae242025+91%1969
PyrrhuloxiaCardinalidae192025+116%1969
Bell's VireoVireonidae192025+464%1969
Northern CardinalCardinalidae172025+292%1969
Lark SparrowPasserellidae142025-57%1969
Greater RoadrunnerCuculidae112017+733%1972
Northern BobwhiteOdontophoridae102025+313%1976
Blue-gray GnatcatcherPolioptilidae102017+200%1979
Cassin's SparrowPasserellidae92025-51%1969
Purple MartinHirundinidae92025+53%1979
Ash-throated FlycatcherTyrannidae82025+7%1969
Curve-billed ThrasherMimidae82017+400%1983
Lesser NighthawkCaprimulgidae72025+78%1969
Crested CaracaraFalconidae72025+220%2009
Golden-fronted WoodpeckerPicidae62025+200%1969
Brown-headed CowbirdIcteridae62025-66%1969
Cactus WrenTroglodytidae62025+117%1972
Bronzed CowbirdIcteridae62017+67%2006
House SparrowPasseridae52025-28%1969
House FinchFringillidae52025-11%1975
Blue GrosbeakCardinalidae52025+100%1976
White-winged DoveColumbidae52025+433%1980
Rock PigeonColumbidae52011n/an/a
Scissor-tailed FlycatcherTyrannidae42025-43%1969
Red-tailed HawkAccipitridae42025+60%1976
Bullock's OrioleIcteridae42025+80%1976
Black VultureCathartidae42025+267%1995
Eurasian Collared-DoveColumbidae42025+520%2003
Ladder-backed WoodpeckerPicidae32025+0%1972
Rufous-crowned SparrowPasserellidae32025+11%1973
Cliff SwallowHirundinidae32023-59%1969
Barn SwallowHirundinidae32025-56%1969
VerdinRemizidae32025+400%1973
Yellow-billed CuckooCuculidae32025-67%1972

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