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BBS Route · Texas · BCR 20

Allen Creek Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 29 survey years, still active.

80Species 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 →
1994–2024Span
4Observers

Bird Species Found on Texas Allen Creek

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Allen Creek 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 CardinalCardinalidae812024-1%1996
Bewick's WrenTroglodytidae742024+134%1996
Painted BuntingCardinalidae482024+177%1996
Mourning DoveColumbidae302024-49%1996
Turkey VultureCathartidae252024+37%1996
Bell's VireoVireonidae242024+575%1996
Lark SparrowPasserellidae222024+8%1996
Summer TanagerCardinalidae162024+317%1996
Black-capped VireoVireonidae16202420×2000
Chipping SparrowPasserellidae152024+840%1996
Black-crested TitmouseParidae132024-69%1996
Blue-gray GnatcatcherPolioptilidae122024+123%2004
White-winged DoveColumbidae122024+31%2015
Common RavenCorvidae92024+850%1996
Cassin's SparrowPasserellidae82023+86%1996
Northern MockingbirdMimidae82024-83%1996
Cave SwallowHirundinidae82024+100%2016
Field SparrowPasserellidae72024-3%1996
Rufous-crowned SparrowPasserellidae62024-42%1996
Canyon TowheePasserellidae62024+43%1996
Ash-throated FlycatcherTyrannidae52024-64%1996
Woodhouse's Scrub-JayCorvidae52024-10%1996
Brown-headed CowbirdIcteridae52024-64%1996
Ladder-backed WoodpeckerPicidae52024+133%2002
Cliff SwallowHirundinidae52008+333%2004
Great-tailed GrackleIcteridae52001n/an/a
Yellow-billed CuckooCuculidae42024-53%1996
Blue GrosbeakCardinalidae42024-47%1996
Black VultureCathartidae42024+14%2001
Black-and-white WarblerParulidae42024+300%2021
Northern BobwhiteOdontophoridae32024-78%1996
Wild TurkeyPhasianidae32024-22%1996
Golden-fronted WoodpeckerPicidae32024+0%1996
Black-chinned HummingbirdTrochilidae32024+25%1997
Lesser GoldfinchFringillidae32024+188%1997
Vermilion FlycatcherTyrannidae32024+180%2000
Red-tailed HawkAccipitridae32022+25%2004
Greater RoadrunnerCuculidae22024+0%1996
Common NighthawkCaprimulgidae22024-21%1996
Eastern PhoebeTyrannidae22024-38%1996

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