BirdAnalyst
BBS Route · Texas · BCR 21

Cottonwood Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 99 species recorded across 51 survey years, still active.

99Species 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 →
1967–2025Span
8Observers

Bird Species Found on Texas Cottonwood

Top 40 of 99 species by most recent count. Each links to its species trend.

Species recorded on the Cottonwood 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 CardinalCardinalidae922025+194%1970
Mourning DoveColumbidae522025+53%1970
Painted BuntingCardinalidae442025+133%1970
American CrowCorvidae362025+529%1970
DickcisselCardinalidae352025+344%1970
Northern MockingbirdMimidae282025-71%1970
Northern Rough-winged SwallowHirundinidae25200613×1985
Turkey VultureCathartidae222025+105%1970
Brown-headed CowbirdIcteridae202025-10%1970
Bewick's WrenTroglodytidae202025-8%1970
Carolina WrenTroglodytidae202025+975%1983
Scissor-tailed FlycatcherTyrannidae192025-23%1970
House SparrowPasseridae182025-66%1970
Lark SparrowPasserellidae142025-20%1970
Barn SwallowHirundinidae132025+550%1983
Purple MartinHirundinidae122025+138%1973
Black-crested TitmouseParidae122025+306%1973
Eastern PhoebeTyrannidae102025+73%1970
Bank SwallowHirundinidae102000+329%1993
White-eyed VireoVireonidae102025+256%2011
Carolina ChickadeeParidae92025+150%1986
Yellow-billed CuckooCuculidae82025-44%1970
Ash-throated FlycatcherTyrannidae82025+200%1979
Eastern MeadowlarkIcteridae82025+116%1972
Black VultureCathartidae82024+180%1987
Chipping SparrowPasserellidae71986+600%1967
Cassin's SparrowPasserellidae62024+22%1973
Summer TanagerCardinalidae62025+31%2012
Northern BobwhiteOdontophoridae52025-93%1970
Blue-gray GnatcatcherPolioptilidae52024+200%1992
Eastern BluebirdTurdidae52025+182%1984
Red-winged BlackbirdIcteridae32024-43%1970
Chuck-will's-widowCaprimulgidae32025+113%1973
Cliff SwallowHirundinidae32025+650%1982
Great Horned OwlStrigidae32025+75%1983
Mississippi KiteAccipitridae32025+267%1994
White-winged DoveColumbidae32024-57%2016
BushtitAegithalidae32015n/an/a
Red-tailed HawkAccipitridae22025-20%1974
Ladder-backed WoodpeckerPicidae22025+0%1972

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