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

Fox Sparrow Population Trend in Oregon

All statesGeneralists

Fox Sparrow in Oregon has fallen sharply: down 66% on the route-weighted index since 1970.

-66%Since 1970
55Routes In State
56Years

Notable Fox Sparrow Trends in Oregon

long arc declinecomputed index

Fox Sparrow has fallen sharply in Oregon: down 66% on the route-weighted index since 1970.

Fox Sparrow Population Forecast in Oregon

If the recent trend holds, Fox Sparrow in Oregon is projected to fall about 75% by 2029 — from 0.96 in 2024 to a central estimate of 0.24 (95% range 0.00–1.7). A 5-year backtest shows a typical error of ±79%, with 100% of held-out values landing inside the 95% band.

-75%Change by 2029
0.24Projected 2029 index
0.00–1.795% range
±79%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
20250.350.001.8
20260.320.001.8
20270.290.001.7
20280.270.001.7
20290.240.001.7

Fox Sparrow Survey Routes in Oregon

Routes recording Fox Sparrow in Oregon.
Davis Lake3820242000
Wizard Falls1820242000
Sisters1020241997
Ruch619951995
Dell Spring419961968
Bly 2420242008
Clearwater420211991
Paunina420241995
Ochoco320212016
Summit Pr220131990
Buchanan219841973
Pendleton220122012
Elk Lake220231972
Badger Creek220241992
Troy220241997
Madras220122012
Warner Mtn.220241992
Whiskey Spg.220111992
Hash Rock220241988
Desolation219991999
Shellrock119941979
Albee120242013
Cool Camp120101968
Lapham Res.120241993
Logdell120241971

Fox Sparrow Population Trend in Other States

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