BirdAnalyst
BBS Route · Texas · BCR 21

Walburg Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 85 species recorded across 39 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 →
39Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1980–2024Span
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
DickcisselCardinalidae802024+947%1982
Mourning DoveColumbidae542024-13%1982
Northern MockingbirdMimidae422024+90%1982
Northern CardinalCardinalidae372024+50%1982
Barn SwallowHirundinidae362024+700%1982
Scissor-tailed FlycatcherTyrannidae332024+53%1982
Red-winged BlackbirdIcteridae262024-31%1982
Western Cattle-EgretArdeidae222024+15%1982
House SparrowPasseridae172024-61%1982
Purple MartinHirundinidae132024+5%1982
American CrowCorvidae122024-34%1982
Painted BuntingCardinalidae122024+133%1982
European StarlingSturnidae112024-14%1982
Brown-headed CowbirdIcteridae112024-50%1982
Common GrackleIcteridae102024-88%1982
Black-crested TitmouseParidae102024+0%1990
Common NighthawkCaprimulgidae92024-45%1982
Chimney SwiftApodidae92024-61%1982
Tufted TitmouseParidae92003+186%1983
Great-tailed GrackleIcteridae82024-18%1983
Carolina WrenTroglodytidae82024+475%1985
Carolina ChickadeeParidae72024+450%1985
Yellow-billed CuckooCuculidae62024-32%1982
Red-bellied WoodpeckerPicidae62024+29%1982
Eurasian Collared-DoveColumbidae62024+417%2006
Black-bellied Whistling-DuckAnatidae62023n/an/a
Eastern MeadowlarkIcteridae52024-93%1982
Eastern BluebirdTurdidae52024+100%1988
Great Crested FlycatcherTyrannidae42024+63%1982
Turkey VultureCathartidae42024+189%1985
Bewick's WrenTroglodytidae42024+333%1993
Great EgretArdeidae42024+57%1994
Cliff SwallowHirundinidae42024-73%2003
Grasshopper SparrowPasserellidae42012+100%2000
White-eyed VireoVireonidae42024+14%2000
KilldeerCharadriidae32024-73%1982
Northern BobwhiteOdontophoridae32019-94%1982
Lark SparrowPasserellidae32024-38%1982
Snowy EgretArdeidae32024+14%2011
Eastern Wood-PeweeTyrannidae32024+133%2000

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.