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Species · Oregon · BBS 2025 Release · 1966–2024

Pied-billed Grebe Population Trend in Oregon

All statesWetland birds

Pied-billed Grebe in Oregon has declined: down 43% on the route-weighted index since 1970.

-43%Since 1970
36Routes In State
56Years

Notable Pied-billed Grebe Trends in Oregon

No notable trend signals for Pied-billed Grebe in Oregon. See the full index history below.

Pied-billed Grebe Population Forecast in Oregon

If the recent trend holds, Pied-billed Grebe in Oregon is projected to stay roughly flat through 2029, near 0.11 (95% range 0.00–0.26). A 5-year backtest shows a typical error of ±55.8%, with 100% of held-out values landing inside the 95% band.

-3%Change by 2029
0.11Projected 2029 index
0.00–0.2695% range
±55.8%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
20250.120.000.26
20260.120.000.26
20270.120.000.26
20280.120.000.26
20290.110.000.26

Pied-billed Grebe Survey Routes in Oregon

Routes recording Pied-billed Grebe in Oregon.
Barnes Val519871985
Catlow Rim420242012
Lone Rock320152015
Warner Vally320241997
Santiam220182006
Umpqua219791979
Elk Lake220181977
Blizzard Gap220231985
Merrill220131995
Mcminnville220172017
Nicolai Mtn.120082007
Winberry119941992
Dell Spring119761968
Wedderburn120232023
Malheur Nwr119891986
Modoc Point120181971
Alvord Lake120192019
Emigrant Lake 2120102010
Adair120121972
Bly 2120242007
Joseph119881977
Dayton119781978
Silver Creek120222022
Princeton119841972
Bly120011988

Pied-billed Grebe Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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