BirdAnalyst
BBS Route · Texas · BCR 21

Glen Rose Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 44 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 →
44Years 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
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 SwallowHirundinidae522025+829%1969
American CrowCorvidae402025+189%1969
Northern CardinalCardinalidae402025-39%1969
Mourning DoveColumbidae342025-30%1969
Turkey VultureCathartidae292025+108%1970
Northern MockingbirdMimidae292025-68%1969
Painted BuntingCardinalidae252025-18%1969
Cave SwallowHirundinidae222023n/an/a
Eastern BluebirdTurdidae172025+300%1971
Brown-headed CowbirdIcteridae122025-78%1969
Lark SparrowPasserellidae122025-81%1969
Barn SwallowHirundinidae122025+600%1975
Carolina ChickadeeParidae112025+107%1970
White-eyed VireoVireonidae102025+123%2012
Scissor-tailed FlycatcherTyrannidae92025-72%1969
Carolina WrenTroglodytidae92025+567%1969
Blue-winged TealAnatidae91968n/an/a
Bewick's WrenTroglodytidae82025-58%1969
Chimney SwiftApodidae72015-21%1971
DickcisselCardinalidae62025-62%1970
Black VultureCathartidae52025+233%1973
Northern Rough-winged SwallowHirundinidae52025+100%1981
House SparrowPasseridae52025-69%1969
Common GrackleIcteridae52024+30%1980
Western Cattle-EgretArdeidae51988n/an/a
White-winged DoveColumbidae52025-61%2017
Yellow-billed CuckooCuculidae42025-74%1969
Black-chinned HummingbirdTrochilidae42018+60%1971
Eastern PhoebeTyrannidae42025+220%1972
European StarlingSturnidae42025+13%1971
Eastern MeadowlarkIcteridae42025-79%1969
Little Blue HeronArdeidae41996+300%1983
Great Blue HeronArdeidae32025+0%1970
House FinchFringillidae32025+20%1973
Loggerhead ShrikeLaniidae32000+25%1970
Bell's VireoVireonidae32025-50%1970
Blue JayCorvidae32025+100%1996
Western KingbirdTyrannidae32025+83%1973
Rock PigeonColumbidae31994+50%1983
MallardAnatidae31997n/an/a

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