BirdAnalyst
BBS Route · Texas · BCR 21

Walburg Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 85 species recorded across 40 survey years, still active.

85Species 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 →
40Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1980–2025Span
5Observers

Bird Species Found on Texas Walburg

Top 40 of 85 species by most recent count. Each links to its species trend.

Species recorded on the Walburg 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
Mourning DoveColumbidae992025+25%1982
Northern CardinalCardinalidae542025+73%1982
Northern MockingbirdMimidae482025+115%1982
DickcisselCardinalidae42202511×1982
Red-winged BlackbirdIcteridae362025-14%1982
Barn SwallowHirundinidae362025+564%1982
House SparrowPasseridae362025-41%1982
Brown-headed CowbirdIcteridae312025-42%1982
Common GrackleIcteridae312025-77%1982
Scissor-tailed FlycatcherTyrannidae262025+62%1982
American CrowCorvidae182025-27%1982
Carolina WrenTroglodytidae182025+725%1985
European StarlingSturnidae162025-2%1982
Purple MartinHirundinidae162025+62%1982
Lark SparrowPasserellidae142025-22%1982
Common NighthawkCaprimulgidae122025-32%1982
Painted BuntingCardinalidae112025+120%1982
Carolina ChickadeeParidae112025+600%1985
Black-crested TitmouseParidae112025+27%1990
Eastern MeadowlarkIcteridae92025-93%1982
Tufted TitmouseParidae92003+186%1983
Eurasian Collared-DoveColumbidae92025+400%2006
Turkey VultureCathartidae82025+156%1985
Western Cattle-EgretArdeidae72025+19%1982
Yellow-billed CuckooCuculidae72025-23%1982
House FinchFringillidae72025+175%2008
Red-bellied WoodpeckerPicidae62025+6%1982
Bewick's WrenTroglodytidae62025+400%1993
Black-bellied Whistling-DuckAnatidae62023n/an/a
KilldeerCharadriidae52025-62%1982
Eastern BluebirdTurdidae52025+175%1988
Red-tailed HawkAccipitridae52025+200%1989
Grasshopper SparrowPasserellidae42012+100%2000
Black VultureCathartidae42025+120%2001
Northern BobwhiteOdontophoridae32019-94%1982
Chimney SwiftApodidae32025-67%1982
Great-tailed GrackleIcteridae32025-11%1983
Great Blue HeronArdeidae32025+200%1986
Blue JayCorvidae32025+0%1985
Eastern Wood-PeweeTyrannidae32024+133%2000

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