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Species · Wyoming · BBS 2025 Release · 1966–2024

Western Meadowlark Population Trend in Wyoming

All statesGrassland birds

Western Meadowlark in Wyoming has edged down: down 18% on the route-weighted index since 1970.

-18%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 →
132Routes 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 →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Western Meadowlark Trends in WyomingNotable 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 Western Meadowlark in Wyoming. See the full index history below.

Western Meadowlark Population Forecast in Wyoming

If the recent trend holds, Western Meadowlark in Wyoming is projected to fall about 22% by 2029 — from 81 in 2024 to a central estimate of 63 (95% range 16–110). A 5-year backtest shows a typical error of ±17.6%, with 100% of held-out values landing inside the 95% band.

-22%Change by 2029TrendPercent 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 →
63Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
16–11095% 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 →
±17.6%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, Western Meadowlark in Wyoming is projected to fall about 22% by 2029 — from 81 in 2024 to a central estimate of 63 (95% range 16–110). A 5-year backtest shows a typical error of ±17.6%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20256518113
20266518112
20276417111
20286417111
20296316110

Western Meadowlark Survey Routes in Wyoming

Routes recording Western Meadowlark in Wyoming.
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 →
Wyarno56020241974
Shawnee36820241988
Arvada36720241982
Gvnt Valley36120241992
Upton35620241987
Newcastle34920241988
Bucknum31520241993
Meadowdale29720191983
Seely 228520242001
Soda Well25620241979
Kaycee21320242014
Rozet21320231991
Redbird21219891968
Riverview21220221982
Recluse18320241981
Raven17720241992
Chugwater17120241979
Lusk17020241982
Clarkelen16819781968
Seely16620001990
Sussex15820241991
Arminto15520241982
Dwyer15320191992
Thunder Basin15020242011
Welch14920191978

Western Meadowlark Population Trend in Other States

arizonacaliforniacoloradoidahoillinoisindianaiowakansaskentuckymichiganminnesotamissourimontananebraskanevadanew-mexiconew-yorknorth-dakotaohiooklahomaoregonpennsylvaniasouth-dakotatexasutahwashingtonwisconsin

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