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Species · Oregon · BBS 2025 Release · 1966–2024

Clark's Grebe Population Trend in Oregon

All statesWetland birds

Clark's Grebe in Oregon has increased: up 38% on the route-weighted index since 1989.

+38%Since 1989
6Routes In State
32Years

Notable Clark's Grebe Trends in Oregon

No notable trend signals for Clark's Grebe in Oregon. See the full index history below.

Clark's Grebe Population Forecast in Oregon

If the recent trend holds, Clark's Grebe in Oregon is projected to rise about 137% by 2029 — from 0.15 in 2024 to a central estimate of 0.36 (95% range 0.00–0.92). A 5-year backtest shows a typical error of ±885.7%, with 100% of held-out values landing inside the 95% band.

+137%Change by 2029
0.36Projected 2029 index
0.00–0.9295% range
±885.7%Backtest error
19862029
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
20250.340.000.90
20260.340.000.91
20270.350.000.91
20280.350.000.92
20290.360.000.92

Clark's Grebe Survey Routes in Oregon

Routes recording Clark's Grebe in Oregon.
Warner Vally1420241994
Catlow Rim220192019
Blizzard Gap219991999
Tualatin120182018
Malheur Nwr119911991
Modoc Point120141986

Clark's Grebe Population Trend in Other States

arizonacaliforniacoloradoidahomontananebraskanevadanorth-dakotasouth-dakotautahwyoming

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