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

Generalists In Oregon

All statesOregon

86 species in this guild. As a group they are -36%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1970.

Guild SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

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

Generalists In Oregon Population Forecast

If the recent trend holds, Generalists in Oregon is projected to fall about 22% by 2029 — from 2.7 in 2024 to a central estimate of 2.1 (95% range 1.2–3.0). A 5-year backtest shows a typical error of ±24.4%, with 80% of held-out values landing inside the 95% band.

-22%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
2.1Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
1.2–3.095% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±24.4%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Generalists in Oregon is projected to fall about 22% by 2029 — from 2.7 in 2024 to a central estimate of 2.1 (95% range 1.2–3.0). A 5-year backtest shows a typical error of ±24.4%, with 80% of held-out values landing inside the 95% band.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 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20252.31.43.2
20262.21.33.1
20272.21.33.1
20282.11.23.0
20292.11.23.0

Member Species In Oregon

Generalists species in Oregon.
TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
Gray PartridgePhasianidae-88%
Tricolored BlackbirdIcteridae-87%
Sooty GrousePhasianidae-85%
BushtitAegithalidae-79%
Purple FinchFringillidae-78%
Rufous HummingbirdTrochilidae-71%
Pine SiskinFringillidae-66%
Fox SparrowPasserellidae-66%
American GoshawkAccipitridae-66%
Gray CatbirdMimidae-65%
Sharp-shinned HawkAccipitridae-64%
Yellow-headed BlackbirdIcteridae-63%
Sagebrush SparrowPasserellidae-61%
American GoldfinchFringillidae-59%
Lincoln's SparrowPasserellidae-59%
Evening GrosbeakFringillidae-58%
Western Screech-OwlStrigidae-58%
Brewer's BlackbirdIcteridae-56%
Belted KingfisherAlcedinidae-56%
Great Horned OwlStrigidae-54%
Clark's NutcrackerCorvidae-53%
Calliope HummingbirdTrochilidae-52%
House FinchFringillidae-50%
Brown-headed CowbirdIcteridae-48%
Barred OwlStrigidae-47%
American Barn OwlTytonidae-47%
Short-eared OwlStrigidae-46%
California TowheePasserellidae-45%
White-crowned SparrowPasserellidae-45%
Black-billed MagpieCorvidae-44%
House SparrowPasseridae-43%
Lesser GoldfinchFringillidae-43%
ChukarPhasianidae-42%
Northern Saw-whet OwlStrigidae-40%
Cooper's HawkAccipitridae-40%
Northern Pygmy-OwlStrigidae-37%
Song SparrowPasserellidae-28%
Band-tailed PigeonColumbidae-26%
Canada JayCorvidae-26%
Chipping SparrowPasserellidae-23%
American DipperCinclidae-21%
Greater Sage-GrousePhasianidae-19%
Mourning DoveColumbidae-19%
Spotted TowheePasserellidae-17%
Burrowing OwlStrigidae-17%
California QuailOdontophoridae-14%
Yellow-breasted ChatIcteriidae-13%
American CrowCorvidae-11%
Bullock's OrioleIcteridae-8%
Golden EagleAccipitridae-4%
Loggerhead ShrikeLaniidae-3%
Pinyon JayCorvidae-2%
European StarlingSturnidae+1%
Black-headed GrosbeakCardinalidae+5%
Western TanagerCardinalidae+10%
American KestrelFalconidae+12%
Red CrossbillFringillidae+19%
Black-chinned HummingbirdTrochilidae+20%
Mountain QuailOdontophoridae+25%
Steller's JayCorvidae+26%
Lazuli BuntingCardinalidae+43%
Cedar WaxwingBombycillidae+48%
Sage ThrasherMimidae+49%
California Scrub-JayCorvidae+51%
Ruffed GrousePhasianidae+52%
Rock PigeonColumbidae+53%
Cassin's FinchFringillidae+58%
Ferruginous HawkAccipitridae+65%
Dusky GrousePhasianidae+67%
Green-tailed TowheePasserellidae+71%
Red-winged BlackbirdIcteridae+71%
Swainson's HawkAccipitridae+77%
Turkey VultureCathartidae+84%
Red-tailed HawkAccipitridae+99%
WrentitSylviidae+105%
Common RavenCorvidae+122%
Brewer's SparrowPasserellidae+143%
Anna's HummingbirdTrochilidae+156%
Peregrine FalconFalconidae+166%
Prairie FalconFalconidae+174%
Northern HarrierAccipitridae+189%
OspreyPandionidae+566%
Bald EagleAccipitridae+836%
Red-shouldered HawkAccipitridae13×
Wild TurkeyPhasianidae26×
Eurasian Collared-DoveColumbidae87×

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