BirdAnalyst
BBS Route · Texas · BCR 21

Sadler Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 101 species recorded across 50 survey years, still active.

101Species 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 →
50Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2025Span
6Observers

Bird Species Found on Texas Sadler

Top 40 of 101 species by most recent count. Each links to its species trend.

Species recorded on the Sadler 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
American CrowCorvidae942025+39%1971
Northern CardinalCardinalidae522025+64%1971
Black VultureCathartidae41202511×1977
Northern MockingbirdMimidae272025-52%1971
DickcisselCardinalidae252025-6%1971
Painted BuntingCardinalidae242025+7%1971
Western Cattle-EgretArdeidae202025+439%1982
Eastern BluebirdTurdidae192025+187%1971
Mourning DoveColumbidae172025-39%1971
Tufted TitmouseParidae172025+105%1971
Cliff SwallowHirundinidae172025-68%1985
Carolina WrenTroglodytidae162025+170%1971
Eastern MeadowlarkIcteridae142025-92%1971
Turkey VultureCathartidae122025+211%1975
Carolina ChickadeeParidae122025+20%1971
White-eyed VireoVireonidae12202512×1980
Great Blue HeronArdeidae122025+243%1981
Lark SparrowPasserellidae102025-72%1971
Indigo BuntingCardinalidae102025+47%1971
Bewick's WrenTroglodytidae102025+667%1971
Brown-headed CowbirdIcteridae92025-66%1971
Red-bellied WoodpeckerPicidae82025+48%1971
Blue JayCorvidae82025-29%1971
Blue GrosbeakCardinalidae82025+175%1971
Barn SwallowHirundinidae82025+238%1971
Red-shouldered HawkAccipitridae82025+225%2001
Scissor-tailed FlycatcherTyrannidae72025-70%1971
Red-winged BlackbirdIcteridae72025-66%1971
Purple MartinHirundinidae72024-44%1973
Neotropic CormorantPhalacrocoracidae72025+140%2016
Common GrackleIcteridae62023-61%1975
Canada GooseAnatidae52023-33%2012
European StarlingSturnidae42025-72%1971
Wild TurkeyPhasianidae42025-50%2006
Blue-winged TealAnatidae42011n/an/a
White-winged DoveColumbidae42023+267%2018
Little Blue HeronArdeidae32022-46%1973
Downy WoodpeckerPicidae32025+0%1971
Great Crested FlycatcherTyrannidae32025+0%1971
House SparrowPasseridae32025-86%1971

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