BirdAnalyst
BBS Route · Texas · BCR 21

Glen Rose Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 43 survey years, still active.

97Species 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 →
43Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
6Observers

Bird Species Found on Texas Glen Rose

Top 40 of 97 species by most recent count. Each links to its species trend.

Species recorded on the Glen Rose 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 SwallowHirundinidae157202412×1969
American CrowCorvidae452024+267%1969
Northern CardinalCardinalidae402024+2%1969
Turkey VultureCathartidae312024+94%1970
Mourning DoveColumbidae252024-31%1969
Cave SwallowHirundinidae222023n/an/a
Painted BuntingCardinalidae212024-32%1969
Northern MockingbirdMimidae162024-58%1969
Barn SwallowHirundinidae162024+480%1975
Carolina ChickadeeParidae112024+57%1970
Lark SparrowPasserellidae102024-76%1969
Eastern BluebirdTurdidae102024+313%1971
European StarlingSturnidae92024+6%1971
House SparrowPasseridae92024-69%1969
Blue-winged TealAnatidae91968n/an/a
Eastern PhoebeTyrannidae72023+240%1972
Red-bellied WoodpeckerPicidae72024+533%1988
Chimney SwiftApodidae72015-21%1971
Blue JayCorvidae72024+143%1996
Yellow-billed CuckooCuculidae52024-67%1969
Scissor-tailed FlycatcherTyrannidae52024-56%1969
Black-crested TitmouseParidae52024+92%1969
Blue-gray GnatcatcherPolioptilidae52024+125%1977
DickcisselCardinalidae52024-60%1970
Common GrackleIcteridae52024+30%1980
Western Cattle-EgretArdeidae51988n/an/a
White-eyed VireoVireonidae52024+123%2012
Black-chinned HummingbirdTrochilidae42018+60%1971
Carolina WrenTroglodytidae42024+467%1969
Bewick's WrenTroglodytidae42024-53%1969
Western KingbirdTyrannidae42024+67%1973
Little Blue HeronArdeidae41996+300%1983
Brown-headed CowbirdIcteridae32024-80%1969
Summer TanagerCardinalidae32024+140%1969
Loggerhead ShrikeLaniidae32000+25%1970
Purple MartinHirundinidae32019+67%1977
Rock PigeonColumbidae31994+50%1983
MallardAnatidae31997n/an/a
Black VultureCathartidae22024+717%1973
Ladder-backed WoodpeckerPicidae22023+40%1970

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