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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 30 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 →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2025Span
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 CardinalCardinalidae752025-1%1996
Bewick's WrenTroglodytidae732025+150%1996
Painted BuntingCardinalidae692025+248%1996
Mourning DoveColumbidae402025-43%1996
Black-crested TitmouseParidae352025-67%1996
Bell's VireoVireonidae272025+763%1996
Lark SparrowPasserellidae242025+9%1996
Turkey VultureCathartidae212025+23%1996
Summer TanagerCardinalidae182025+325%1996
Chipping SparrowPasserellidae132025+780%1996
Black-capped VireoVireonidae13202517×2000
Blue GrosbeakCardinalidae122025+0%1996
Blue-gray GnatcatcherPolioptilidae122025+100%2004
Northern MockingbirdMimidae92025-85%1996
Cave SwallowHirundinidae82024+100%2016
Ash-throated FlycatcherTyrannidae72025-64%1996
Field SparrowPasserellidae72025-6%1996
Common RavenCorvidae62025+500%1996
Crested CaracaraFalconidae62025+140%2003
Woodhouse's Scrub-JayCorvidae52025-24%1996
Lesser GoldfinchFringillidae52025+38%1997
Cliff SwallowHirundinidae52008+333%2004
Great-tailed GrackleIcteridae52001n/an/a
White-winged DoveColumbidae52025+46%2015
Yellow-billed CuckooCuculidae42025-35%1996
House FinchFringillidae42025-81%1996
Rufous-crowned SparrowPasserellidae42025-39%1996
Golden-fronted WoodpeckerPicidae32025+40%1996
Black-chinned HummingbirdTrochilidae32024+25%1997
Scott's OrioleIcteridae32025+13%1996
Orchard OrioleIcteridae32025-58%1996
Cassin's SparrowPasserellidae32025+114%1996
Ladder-backed WoodpeckerPicidae32025+117%2002
Vermilion FlycatcherTyrannidae32025+100%2000
Red-tailed HawkAccipitridae32022+25%2004
Black-and-white WarblerParulidae32025+40%2022
Northern BobwhiteOdontophoridae22025-80%1996
Wild TurkeyPhasianidae22025-22%1996
Greater RoadrunnerCuculidae22025+0%1996
Common NighthawkCaprimulgidae22025-36%1996

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