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

Sagebrush Sparrow Population Trend in Oregon

All statesGeneralists

Sagebrush Sparrow in Oregon has fallen sharply: down 61% on the route-weighted index since 1970.

-61%Since 1970
42Routes In State
56Years

Notable Sagebrush Sparrow Trends in Oregon

long arc declinecomputed index

Sagebrush Sparrow has fallen sharply in Oregon: down 61% on the route-weighted index since 1970.

Sagebrush Sparrow Population Forecast in Oregon

If the recent trend holds, Sagebrush Sparrow in Oregon is projected to fall about 73% by 2029 — from 2.3 in 2024 to a central estimate of 0.63 (95% range 0.00–3.4). A 5-year backtest shows a typical error of ±44.6%, with 100% of held-out values landing inside the 95% band.

-73%Change by 2029
0.63Projected 2029 index
0.00–3.495% range
±44.6%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
20250.900.003.7
20260.830.003.6
20270.760.003.6
20280.690.003.5
20290.630.003.4

Sagebrush Sparrow Survey Routes in Oregon

Routes recording Sagebrush Sparrow in Oregon.
Willow Spg5519711969
Wagontire4920241968
Fandango Can4720241977
Lookout Lake4719941985
Harney Lake2120241993
Wickiup1619861969
Crowley1520241983
Green Mtn.1420241994
Trout Creek1220211996
Blitzen1119931971
Blitzen 21020241994
Blizzard Gap1020241984
Warner Vally1020241993
Crooked Riv.1020241994
Alvord Lake720241968
Clover Creek620241972
Malheur Nwr519981987
Bly519921988
Bowden Hills520242024
Joseph419731973
Battle Mtn420241985
Catlow Rim420241997
Malheur Res.420232022
Lapham Res.320011991
Princeton319851972

Sagebrush Sparrow Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicoutahwashingtonwyoming

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