BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Redhead In Great Basin

All regionsGreat BasinWaterfowl

Redhead in Great Basin has risen sharply: up 64% on the route-weighted index since 1970.

+64%Since 1970
80Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Redhead has risen sharply in Great Basin: up 64% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Redhead in Great Basin is projected to stay roughly flat through 2029, near 1.5 (95% range 0.00–4.7). A 5-year backtest shows a typical error of ±286.1%, with 100% of held-out values landing inside the 95% band.

+1%Change by 2029
1.5Projected 2029 index
0.00–4.795% range
±286.1%Backtest error
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 index95% low95% high
20251.50.004.8
20261.50.004.8
20271.50.004.8
20281.50.004.7
20291.50.004.7

Routes In Great Basin

Routes recording Redhead in Great Basin.
Warner VallyOREGON1592024
DorrisCALIFORNIA562019
KeystoneWASHINGTON362024
Bear RiverUTAH312023
OthelloWASHINGTON301991
Columbia NwrWASHINGTON202021
PrestonIDAHO181994
Harney LakeOREGON181999
Pasadena ValIDAHO161991
Catlow RimOREGON122017
BrewsterWASHINGTON122018
Moses LakeWASHINGTON122022
MadelineCALIFORNIA102018
Ruby Valley 2NEVADA102021
WilburWASHINGTON102005
Crowder FlatCALIFORNIA82002
HarringtonWASHINGTON81980
HikoNEVADA71973
Blizzard GapOREGON72023
PicaboIDAHO62009
CortezNEVADA62024
Oak CityUTAH61996
TonasketWASHINGTON62018
Blacks CreekIDAHO51974
EurekaNEVADA52017

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