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

Eared Grebe Population Trend in Colorado

All statesWetland birds

Eared Grebe in Colorado has edged up: up 15% on the route-weighted index since 1980.

+15%Since 1980
21Routes In State
34Years

Notable Eared Grebe Trends in Colorado

No notable trend signals for Eared Grebe in Colorado. See the full index history below.

Eared Grebe Population Forecast in Colorado

If the recent trend holds, Eared Grebe in Colorado is projected to fall about 11% by 2029 — from 0.19 in 2024 to a central estimate of 0.17 (95% range 0.00–0.35). A 5-year backtest shows a typical error of ±46.9%, with 100% of held-out values landing inside the 95% band.

-11%Change by 2029
0.17Projected 2029 index
0.00–0.3595% range
±46.9%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
20250.160.000.35
20260.160.000.35
20270.160.000.35
20280.160.000.35
20290.170.000.35

Eared Grebe Survey Routes in Colorado

Routes recording Eared Grebe in Colorado.
Wildhorse L3020152015
Alamosa2420232023
Dinosaur1220241995
Rio Grnds Rs620241994
Kiowa519991980
Mcphee Res.520191997
Guffey420172015
Haswell320222022
Walden220161991
Willow Peak220092009
Tarryall220182013
Nunn220192019
Amherst220072007
Cortez219981998
Dolores119841968
Falfa119801980
Pagosa Spgs119751975
Cortez 2120162010
Doyleville119891989
Julesburg120112007
Piedra120122012

Eared Grebe Population Trend in Other States

arizonacaliforniaidahoiowakansasminnesotamontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashingtonwyoming

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