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BBS Route · Texas · BCR 20

Harper Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 55 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 →
55Years 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
3Observers

Bird Species Found on Texas Harper

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

Species recorded on the Harper 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
Painted BuntingCardinalidae642025+10%1971
Northern CardinalCardinalidae632025+76%1971
Mourning DoveColumbidae522025-34%1971
Bell's VireoVireonidae512025+5%1971
Bewick's WrenTroglodytidae372025+14%1971
Northern MockingbirdMimidae342025-69%1971
Turkey VultureCathartidae332025+96%1971
Lark SparrowPasserellidae262025-58%1971
Summer TanagerCardinalidae182025+173%1971
Purple MartinHirundinidae182025+267%1976
Black-throated SparrowPasserellidae162025+47%1971
Black VultureCathartidae152025+925%1992
Brown-headed CowbirdIcteridae152025-5%1971
Black-crested TitmouseParidae142025+21%1971
Blue-gray GnatcatcherPolioptilidae142025+820%1974
Yellow-billed CuckooCuculidae132025-21%1971
Golden-fronted WoodpeckerPicidae132025+420%1975
Scissor-tailed FlycatcherTyrannidae122025-23%1971
Orchard OrioleIcteridae112025-67%1971
Ash-throated FlycatcherTyrannidae102025+700%1971
White-winged DoveColumbidae102025+520%2005
Yellow-breasted ChatIcteriidae92025+325%1974
Northern BobwhiteOdontophoridae82025-77%1971
Ladder-backed WoodpeckerPicidae72025+27%1971
White-eyed VireoVireonidae62025+433%1998
Crested CaracaraFalconidae62025+56%2017
Red-tailed HawkAccipitridae52025+100%1971
Rufous-crowned SparrowPasserellidae52025-20%1972
House SparrowPasseridae52025-84%1971
PyrrhuloxiaCardinalidae52025-9%1975
Indigo BuntingCardinalidae52024+40%2004
Vermilion FlycatcherTyrannidae42025+157%1971
House FinchFringillidae42025-31%1971
Cassin's SparrowPasserellidae42025+80%1971
Barn SwallowHirundinidae42025+183%1975
VerdinRemizidae42019+50%1983
Common GrackleIcteridae42021+300%1985
Eurasian Collared-DoveColumbidae42025+200%2008
Great Horned OwlStrigidae31989-30%1982
Eastern PhoebeTyrannidae32025-33%1971

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