BirdAnalyst
BBS Route · Oklahoma · BCR 21

Barnsdall Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 11 survey years, no longer active.

77Species 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 →
11Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–1977Span
2Observers

Bird Species Found on Oklahoma Barnsdall

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Barnsdall 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
Eastern MeadowlarkIcteridae541977-15%1969
Northern BobwhiteOdontophoridae391977-13%1969
Field SparrowPasserellidae261977-34%1969
Barn SwallowHirundinidae201977+14%1969
Red-winged BlackbirdIcteridae191977-25%1969
Great Crested FlycatcherTyrannidae181976-19%1969
Northern CardinalCardinalidae151977-17%1969
Scissor-tailed FlycatcherTyrannidae141977-17%1969
American CrowCorvidae141977-45%1969
Lark SparrowPasserellidae141977-47%1969
Yellow-billed CuckooCuculidae121977+19%1969
Chimney SwiftApodidae111977-7%1969
DickcisselCardinalidae111977-48%1969
Northern MockingbirdMimidae101977-13%1969
Blue JayCorvidae91977-16%1969
Mourning DoveColumbidae81977-39%1969
Blue-gray GnatcatcherPolioptilidae81976-49%1969
European StarlingSturnidae71977+71%1969
Grasshopper SparrowPasserellidae71976+21%1969
Chuck-will's-widowCaprimulgidae71976+0%1970
Brown-headed CowbirdIcteridae61977-48%1969
Indigo BuntingCardinalidae61977-60%1969
House SparrowPasseridae61977-71%1969
American RobinTurdidae51977-29%1969
Tufted TitmouseParidae41977-24%1969
Green HeronArdeidae31977+20%1969
Red-bellied WoodpeckerPicidae31976-15%1969
Eastern KingbirdTyrannidae31977+8%1969
Orchard OrioleIcteridae31977-64%1969
Summer TanagerCardinalidae31977-44%1969
Loggerhead ShrikeLaniidae31977-56%1969
Brown ThrasherMimidae31977-50%1969
Bewick's WrenTroglodytidae31977-57%1969
Belted KingfisherAlcedinidae31977+100%1969
American GoldfinchFringillidae31977-67%1971
White-breasted NuthatchSittidae31977-50%1971
Ruby-throated HummingbirdTrochilidae31975+200%1971
Great Blue HeronArdeidae21977-36%1969
KilldeerCharadriidae21977+50%1969
Turkey VultureCathartidae21977-81%1969

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