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

Bobolink Population Trend in Oregon

All statesGrassland birds

Bobolink in Oregon has increased: up 47% on the route-weighted index since 1977.

+47%Since 1977
9Routes In State
46Years

Notable Bobolink Trends in Oregon

No notable trend signals for Bobolink in Oregon. See the full index history below.

Bobolink Population Forecast in Oregon

If the recent trend holds, Bobolink in Oregon is projected to rise about 98% by 2029 — from 0.07 in 2024 to a central estimate of 0.13 (95% range 0.00–0.50). A 5-year backtest shows a typical error of ±183.6%, with 100% of held-out values landing inside the 95% band.

+98%Change by 2029
0.13Projected 2029 index
0.00–0.5095% range
±183.6%Backtest error
19742029
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
20250.140.000.51
20260.140.000.51
20270.130.000.51
20280.130.000.50
20290.130.000.50

Bobolink Survey Routes in Oregon

Routes recording Bobolink in Oregon.
Fish Lake620241974
Joseph420162016
Wickiup420031987
Bridgeport420221987
Sparta220011978
Princeton219851982
Albee120161996
Mount Vernon120131990
Blitzen119871987

Bobolink Population Trend in Other States

californiacoloradoconnecticutidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandsouth-dakotautahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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