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Species · BCR 12 · BBS 2025 Release · 1966–2024

American Coot In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionWetland birds

American Coot in Boreal Hardwood Transition has increased: up 34% on the route-weighted index since 1973.

+34%Since 1973TrendPercent 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 →
14Routes 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 →
26YearsYears 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 Coot in Boreal Hardwood Transition. See the full index history below.

American Coot In Boreal Hardwood Transition Population Forecast

If the recent trend holds, American Coot in Boreal Hardwood Transition is projected to stay roughly flat through 2021, near 0.03 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±92.3%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2021TrendPercent 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 →
0.03Projected 2021 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.0995% 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 →
±92.3%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 Coot in Boreal Hardwood Transition is projected to stay roughly flat through 2021, near 0.03 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±92.3%, with 100% of held-out values landing inside the 95% band.19682021
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 →
20170.030.000.09
20180.030.000.09
20190.030.000.09
20200.030.000.09
20210.030.000.09

Routes In Boreal Hardwood Transition

Routes recording American Coot 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 →
BackusMINNESOTA31979
GreenbushMINNESOTA32016
CromwellMINNESOTA21998
BrainerdMINNESOTA22008
GilmanWISCONSIN21981
BemidjiMINNESOTA11980
DebsMINNESOTA12005
LudeMINNESOTA11987
MahtowaMINNESOTA12006
Cass LakeMINNESOTA11992
NebishMINNESOTA11993
Rib LakeWISCONSIN12014
Washington IWISCONSIN11971
FlambeauWISCONSIN12009

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