BirdAnalyst
Species · BCR 12 · BBS 2026 Release · 1966–2025

American Crow In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

American Crow in Boreal Hardwood Transition has held roughly steady: down 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 →
127Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Crow in Boreal Hardwood Transition. See the full index history below.

American Crow In Boreal Hardwood Transition Population Forecast

If the recent trend holds, American Crow in Boreal Hardwood Transition is projected to rise about 33% by 2030 — from 20 in 2025 to a central estimate of 27 (95% range 18–36). A 5-year backtest shows a typical error of ±46.3%, with 0% of held-out values landing inside the 95% band.

+33%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 →
27Projected 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 →
18–3695% 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 →
±46.3%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 Crow in Boreal Hardwood Transition is projected to rise about 33% by 2030 — from 20 in 2025 to a central estimate of 27 (95% range 18–36). A 5-year backtest shows a typical error of ±46.3%, with 0% of held-out values landing inside the 95% band.19662030
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 →
2026271836
2027271836
2028271836
2029271836
2030271836

Routes In Boreal Hardwood Transition

Routes recording American Crow in Boreal Hardwood Transition.
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 →
BagleyMINNESOTA1102006
Iron RiverWISCONSIN972025
PickfordMICHIGAN722025
GilmanWISCONSIN612025
Washington IWISCONSIN592025
Crystal FlsMICHIGAN512025
DebsMINNESOTA482025
WarroadMINNESOTA482025
MayfieldMICHIGAN462025
Sherry LakeMINNESOTA452022
WilsonMICHIGAN442010
BemidjiMINNESOTA441980
NebishMINNESOTA412025
PhillipsWISCONSIN412025
LudeMINNESOTA402025
BabbittMINNESOTA392025
BootjackMICHIGAN372023
HerronMICHIGAN362016
Pleasant Valley 2MICHIGAN352025
Weirgor SpringsWISCONSIN352025
IshpemingMICHIGAN342025
SkeelsMICHIGAN342015
Wigwam BayMINNESOTA332023
Hubbard LakeMICHIGAN321996
Cedar RunMICHIGAN321999

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