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Species · Oregon · BBS 2025 Release · 1966–2024

Nashville Warbler Population Trend in Oregon

All statesForest birds

Nashville Warbler in Oregon has surged: up 351% on the route-weighted index since 1970.

+351%Since 1970
63Routes In State
56Years

Notable Nashville Warbler Trends in Oregon

long arc increasecomputed index

Nashville Warbler has surged in Oregon: up 351% on the route-weighted index since 1970.

Nashville Warbler Population Forecast in Oregon

If the recent trend holds, Nashville Warbler in Oregon is projected to rise about 71% by 2029 — from 1.5 in 2024 to a central estimate of 2.5 (95% range 1.3–3.8). A 5-year backtest shows a typical error of ±55.9%, with 80% of held-out values landing inside the 95% band.

+71%Change by 2029
2.5Projected 2029 index
1.3–3.895% range
±55.9%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
20252.41.23.7
20262.51.23.8
20272.51.23.8
20282.51.23.8
20292.51.33.8

Nashville Warbler Survey Routes in Oregon

Routes recording Nashville Warbler in Oregon.
Clearwater3920211991
Selma3120241993
Ruch2020231992
Prospect1920241993
Cinderella1720241993
Secret Val1620221975
Days Creek1520241971
Badger Creek1220241993
Wizard Falls1120241998
Whiskey Spg.1020221992
Sams Valley1020241993
Molalla920212021
Derby919931978
Camp Sherman719941972
Mt Hood420241986
Hells Canyon420221998
Warner Mtn.420241992
Elkton319911973
Ochoco320241993
Donelly 2320222021
Imnaha219731973
Summit Pr220241986
Cool Camp220101968
Lapham Res.220241992
Winberry220231972

Nashville Warbler Population Trend in Other States

californiaconnecticutidahomainemarylandmassachusettsmichiganminnesotamontananew-hampshirenew-jerseynew-yorknorth-dakotapennsylvaniarhode-islandvermontvirginiawashingtonwest-virginiawisconsin

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