BirdAnalyst
BBS Route · Texas · BCR 21

Arenosa Crk Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 90 species recorded across 51 survey years, still active.

90Species 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 →
51Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
5Observers

Bird Species Found on Texas Arenosa Crk

Top 40 of 90 species by most recent count. Each links to its species trend.

Species recorded on the Arenosa Crk 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
Cliff SwallowHirundinidae1402025+204%1993
Northern CardinalCardinalidae972025+58%1970
American CrowCorvidae902025+161%1970
Western Cattle-EgretArdeidae672025+541%1977
Mourning DoveColumbidae662025+104%1970
Painted BuntingCardinalidae652025+95%1970
White-eyed VireoVireonidae58202521×1973
Northern MockingbirdMimidae532025+5%1970
Carolina WrenTroglodytidae512025+567%1973
Wood StorkCiconiidae482015n/an/a
Turkey VultureCathartidae452025+60%1970
Northern BobwhiteOdontophoridae362025-71%1970
Eastern BluebirdTurdidae302025+118%1972
Carolina ChickadeeParidae292025+26%1970
Lark SparrowPasserellidae262025+115%1973
Brown-headed CowbirdIcteridae212025+95%1970
Black VultureCathartidae202025+200%1981
Scissor-tailed FlycatcherTyrannidae182025-21%1970
Northern ParulaParulidae182025+380%1996
Eastern MeadowlarkIcteridae152025-82%1970
Barn SwallowHirundinidae152025+27%1980
Black-necked StiltRecurvirostridae14200214×1993
Tufted TitmouseParidae132025+157%1972
Red-bellied WoodpeckerPicidae122025+67%1972
Common GrackleIcteridae122023+121%1978
Blue JayCorvidae112025+20%1971
House SparrowPasseridae112025-22%1970
KilldeerCharadriidae102025+8%1970
Summer TanagerCardinalidae92025+180%1973
Golden-fronted WoodpeckerPicidae81970n/an/a
Common YellowthroatParulidae72000n/an/a
Yellow-billed CuckooCuculidae62025+53%1971
Red-shouldered HawkAccipitridae62025+140%1977
Bewick's WrenTroglodytidae51992-77%1972
White-breasted NuthatchSittidae52007-17%1970
Purple MartinHirundinidae52025+11%1978
Great EgretArdeidae52021+40%2000
Great Horned OwlStrigidae52019+200%1992
Pileated WoodpeckerPicidae52025+100%1988
Blue-gray GnatcatcherPolioptilidae42025+20%2002

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