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Species · Oklahoma · BBS 2026 Release · 1966–2025

Eastern Meadowlark Population Trend in Oklahoma

All statesGrassland birds

Eastern Meadowlark in Oklahoma has declined: down 32% on the route-weighted index since 1969.

-32%Since 1969TrendPercent 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 →
66Routes 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 →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Eastern Meadowlark 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 →

No notable trend signals for Eastern Meadowlark in Oklahoma. See the full index history below.

Eastern Meadowlark Population Forecast in Oklahoma

If the recent trend holds, Eastern Meadowlark in Oklahoma is projected to fall about 32% by 2030 — from 43 in 2025 to a central estimate of 29 (95% range 13–45). A 5-year backtest shows a typical error of ±16.8%, with 100% of held-out values landing inside the 95% band.

-32%Change by 2030TrendPercent 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 →
29Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
13–4595% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±16.8%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Eastern Meadowlark in Oklahoma is projected to fall about 32% by 2030 — from 43 in 2025 to a central estimate of 29 (95% range 13–45). A 5-year backtest shows a typical error of ±16.8%, with 100% of held-out values landing inside the 95% band.19672030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
2026321648
2027311547
2028311447
2029301446
2030291345

Eastern Meadowlark Survey Routes in Oklahoma

Routes recording Eastern Meadowlark 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 →
Cooperton14320251992
Ft Sill East13719941994
Ft Sill West12819941994
Wichita Mtns12519941994
Grimes12420251968
Cashion11820241992
Colony10719951995
Wakita9920161967
Welch9520251967
Pocola8720161992
Indianola8520251967
Cookietown8220061968
Wainwright8020131992
Verden7920171967
Bartlesville7320251967
Douglas7320221967
Loco7219851967
Foraker7120251992
Sickles6220211992
Woodward5920251992
Randlett5820251967
Jet5720241992
Lookout5620251968
Barnsdall5419771967
Hunter5420241992

Eastern Meadowlark Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.