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Species · Michigan · BBS 2025 Release · 1966–2024

American Robin Population Trend in Michigan

All statesForest birds

American Robin in Michigan has held roughly steady: up 9% on the route-weighted index since 1968.

+9%Since 1968TrendPercent 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 →
108Routes 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 American Robin Trends in MichiganNotable 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 American Robin in Michigan. See the full index history below.

American Robin Population Forecast in Michigan

If the recent trend holds, American Robin in Michigan is projected to stay roughly flat through 2029, near 52 (95% range 42–61). A 5-year backtest shows a typical error of ±13.6%, with 100% of held-out values landing inside the 95% band.

-0%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 →
52Projected 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 →
42–6195% 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 →
±13.6%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, American Robin in Michigan is projected to stay roughly flat through 2029, near 52 (95% range 42–61). A 5-year backtest shows a typical error of ±13.6%, with 100% of held-out values landing inside the 95% band.19662029
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 →
2025524261
2026524261
2027524261
2028524261
2029524261

American Robin Survey Routes in Michigan

Routes recording American Robin in Michigan.
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 →
St Charles12720191967
Lapeer12620242000
Holt11620241969
Galesburg10720241966
Cohoctah10720242021
Bell Oak 210720232016
Lawrence9920241969
Howardsville9320241969
Maple Rapids8820231987
North Branch8719991974
Coopersville8320241979
Hamburg8220011981
Fowlerville8120191974
Richmond8120241999
Adair7919951974
Ola7820241974
Cunard7320211973
Belding 27020242004
No Bradley6520241970
Allegan Wma6520191993
Homer6420241975
Skeels6320151966
S Lyons6319921966
Owendale6020171978
New Buffalo6020141992

American Robin Population Trend in Other States

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

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