BirdAnalyst
Species · Oklahoma · BBS 2025 Release · 1966–2024

Yellow-headed Blackbird Population Trend in Oklahoma

All statesGeneralists

Yellow-headed Blackbird in Oklahoma has surged: up 81% on the route-weighted index since 1970.

+81%Since 1970TrendPercent 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 →
13Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow-headed Blackbird Trends in OklahomaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Yellow-headed Blackbird has surged in Oklahoma: up 81% on the route-weighted index since 1970.

Yellow-headed Blackbird Survey Routes in Oklahoma

Routes recording Yellow-headed Blackbird in Oklahoma.
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 →
Hooker920231994
Lookout719771977
Felt419881985
Keyes420152015
Hardesty220131977
Clear Lake220122012
Rosston119781969
Verden119671967
Eagle City119911989
Bethel119971997
Hollis120002000
Douglas119911991
Wakita119701970

Yellow-headed Blackbird Population Trend in Other States

arizonacaliforniacoloradoidahoillinoisindianaiowakansasmichiganminnesotamissourimontananebraskanevadanew-mexiconorth-dakotaohiooregonsouth-dakotatexasutahwashingtonwisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.