BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Eared Grebe In Northern Rockies

All regionsNorthern RockiesWetland birds

Eared Grebe in Northern Rockies has surged: up 207% on the route-weighted index since 1976.

+207%Since 1976
33Routes In Region
43Years

Notable Signals

long arc increasecomputed index

Eared Grebe has surged in Northern Rockies: up 207% on the route-weighted index since 1976.

Forecast

If the recent trend holds, Eared Grebe in Northern Rockies is projected to rise about 384% by 2029 — from 0.14 in 2024 to a central estimate of 0.65 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±411%, with 100% of held-out values landing inside the 95% band.

+384%Change by 2029
0.65Projected 2029 index
0.00–1.595% range
±411%Backtest error
19702029
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
20250.610.001.4
20260.620.001.5
20270.630.001.5
20280.640.001.5
20290.650.001.5

Routes In Northern Rockies

Routes recording Eared Grebe in Northern Rockies.
Neponset ResUTAH502018
YellowstoneWYOMING352018
Hebgen LakeMONTANA322022
Saleratus CrUTAH202016
HarmonyWYOMING132022
Carter 2WYOMING132024
Rock RiverWYOMING112022
MammothWYOMING72016
AnchorWYOMING62016
PathfinderWYOMING52024
LamontWYOMING41991
Mtn ViewWYOMING42022
CascadeIDAHO21983
AugustaMONTANA22015
Red RockMONTANA22010
ErvayWYOMING22022
MckinnonWYOMING21982
Horse CreekWYOMING22012
Fiddler LkWYOMING22004
Green RiverWYOMING21981
RawlinsWYOMING22006
WalcottWYOMING21992
Patrick Draw 2WYOMING21982
Rawlins 2WYOMING22016
KalispellMONTANA12012

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