BirdAnalyst
Species · Idaho · BBS 2025 Release · 1966–2024

Redhead Population Trend in Idaho

All statesWaterfowl

Redhead in Idaho has collapsed: down 89% on the route-weighted index since 1971.

-89%Since 1971
16Routes In State
42Years

Notable Redhead Trends in Idaho

long arc declinecomputed index

Redhead has collapsed in Idaho: down 89% on the route-weighted index since 1971.

Redhead Population Forecast in Idaho

If the recent trend holds, Redhead in Idaho is projected to fall about 100% by 2027 — from 0.81 in 2022 to a central estimate of 0.00 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±737%, with 80% of held-out values landing inside the 95% band.

-100%Change by 2027
0.00Projected 2027 index
0.00–1.695% range
±737%Backtest error
19692027
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20230.000.001.6
20240.000.001.6
20250.000.001.6
20260.000.001.6
20270.000.001.6

Redhead Survey Routes in Idaho

Routes recording Redhead in Idaho.
Naples2320221981
Preston1819941991
Pasadena Val1619911988
Crane Creek720082008
Picabo620092000
Blacks Creek519741973
Iron Springs420191988
Blackft Res220031984
Twin Buttes219991999
Cabarton220222009
Springfield220151969
Mud Lake219981992
Cedar Hill120151999
Yellow Pine120122012
Magic Mtn120092009
Featherville120102010

Redhead Population Trend in Other States

alaskaarizonacaliforniacoloradoiowakansasmichiganminnesotamontananebraskanevadanew-mexiconew-yorknorth-dakotaoklahomaoregonsouth-dakotatexasutahwashingtonwisconsinwyoming

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