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

Common Poorwill Population Trend in Oregon

All statesAerial insectivores

Common Poorwill in Oregon has surged: up 159% on the route-weighted index since 1978.

+159%Since 1978
29Routes In State
40Years

Notable Common Poorwill Trends in Oregon

long arc increasecomputed index

Common Poorwill has surged in Oregon: up 159% on the route-weighted index since 1978.

Common Poorwill Population Forecast in Oregon

If the recent trend holds, Common Poorwill in Oregon is projected to fall about 21% by 2029 — from 0.10 in 2024 to a central estimate of 0.08 (95% range 0.02–0.14). A 5-year backtest shows a typical error of ±81.8%, with 100% of held-out values landing inside the 95% band.

-21%Change by 2029
0.08Projected 2029 index
0.02–0.1495% range
±81.8%Backtest error
19722029
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
20250.070.020.13
20260.070.020.13
20270.080.020.13
20280.080.020.14
20290.080.020.14

Common Poorwill Survey Routes in Oregon

Routes recording Common Poorwill in Oregon.
Flook Lake320241998
Crowley220221984
Alvord Lake220061999
Eightmile219931993
Clover Creek219971997
Green Mtn.220222022
Three Forks120242003
Blitzen 2120182018
Wickiup120192019
Bridgeport120102005
Fandango Can120241985
Wagontire120241994
Blitzen119921992
Emigrant Lake 2120242024
Mt Hood119781972
Silver Creek120181992
Blizzard Gap120231985
Lookout Lake119921992
Badger Creek119981998
Unity120232023
Donelly 2120192019
Bald Mtn.119931992
Picture Flat120222007
Warner Vally120241993
Catlow Rim120181995

Common Poorwill Population Trend in Other States

arizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexicooklahomasouth-dakotatexasutahwashingtonwyoming

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