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Species · Montana · BBS 2025 Release · 1966–2024

Eastern Kingbird Population Trend in Montana

All statesAerial insectivores

Eastern Kingbird in Montana has increased: up 40% on the route-weighted index since 1970.

+40%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 →
105Routes 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 Eastern Kingbird Trends in MontanaNotable 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 Kingbird in Montana. See the full index history below.

Eastern Kingbird Population Forecast in Montana

If the recent trend holds, Eastern Kingbird in Montana is projected to fall about 26% by 2029 — from 7.2 in 2024 to a central estimate of 5.3 (95% range 3.4–7.2). A 5-year backtest shows a typical error of ±19.8%, with 60% of held-out values landing inside the 95% band.

-26%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 →
5.3Projected 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 →
3.4–7.295% 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 →
±19.8%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 Kingbird in Montana is projected to fall about 26% by 2029 — from 7.2 in 2024 to a central estimate of 5.3 (95% range 3.4–7.2). A 5-year backtest shows a typical error of ±19.8%, with 60% 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 →
20255.23.37.1
20265.23.37.1
20275.23.47.1
20285.33.47.2
20295.33.47.2

Eastern Kingbird Survey Routes in Montana

Routes recording Eastern Kingbird in Montana.
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 →
Wolf Point4820242015
Forsyth3020231980
Chinook2920242015
Saco2820242015
Cabin Creek2720242018
Redstone2620241968
Chuffey Spring2520242016
Glasgow2220241968
Lambert2120242021
Brandenberg2020191968
Westby2020242015
Lindsay1920242015
Kalispell1820241968
Clyde Park1820242018
Ester Lake1720242015
Winifred1720232023
Augusta1520241976
Flatwillow1520081968
Cleveland1420241979
Brusett1320241982
Boulder1320241970
Glen1320241977
Wheat Basin1320242017
Highwood1220241968
Locate1220241981

Eastern Kingbird Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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