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

Generalists In Nebraska

All statesNebraska

61 species in this guild. As a group they are -29%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 1969.

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 Nebraska. See the full index history below.

Generalists In Nebraska Population Forecast

If the recent trend holds, Generalists in Nebraska is projected to fall about 22% by 2029 — from 7.1 in 2024 to a central estimate of 5.5 (95% range 3.5–7.6). A 5-year backtest shows a typical error of ±20.3%, with 100% 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 →
5.5Projected 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 →
3.5–7.695% 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 →
±20.3%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 Nebraska is projected to fall about 22% by 2029 — from 7.1 in 2024 to a central estimate of 5.5 (95% range 3.5–7.6). A 5-year backtest shows a typical error of ±20.3%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20255.83.87.9
20265.83.77.8
20275.73.67.7
20285.63.67.6
20295.53.57.6

Member Species In Nebraska

Generalists species in Nebraska.
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 →
Chestnut-collared LongspurCalcariidae-96%
Black-billed CuckooCuculidae-84%
House SparrowPasseridae-83%
Red CrossbillFringillidae-83%
Loggerhead ShrikeLaniidae-79%
Thick-billed LongspurCalcariidae-77%
Northern HarrierAccipitridae-71%
Brewer's SparrowPasserellidae-71%
Black-billed MagpieCorvidae-70%
Northern MockingbirdMimidae-70%
Golden EagleAccipitridae-63%
Sharp-tailed GrousePhasianidae-58%
Eastern Screech-OwlStrigidae-50%
Rock PigeonColumbidae-47%
Burrowing OwlStrigidae-45%
Brown ThrasherMimidae-44%
Lazuli BuntingCardinalidae-43%
Belted KingfisherAlcedinidae-42%
Eastern TowheePasserellidae-34%
Common GrackleIcteridae-30%
American CrowCorvidae-30%
Prairie FalconFalconidae-28%
Yellow-billed CuckooCuculidae-24%
Ferruginous HawkAccipitridae-10%
Mourning DoveColumbidae+1%
Gray CatbirdMimidae+4%
Rose-breasted GrosbeakCardinalidae+5%
Blue JayCorvidae+12%
American KestrelFalconidae+16%
Red-winged BlackbirdIcteridae+19%
Brown-headed CowbirdIcteridae+25%
Great Horned OwlStrigidae+26%
Yellow-headed BlackbirdIcteridae+33%
Bullock's OrioleIcteridae+36%
Baltimore OrioleIcteridae+57%
Scarlet TanagerCardinalidae+64%
Swainson's HawkAccipitridae+70%
European StarlingSturnidae+73%
American GoldfinchFringillidae+74%
Indigo BuntingCardinalidae+84%
Great-tailed GrackleIcteridae+119%
Brewer's BlackbirdIcteridae+122%
Swamp SparrowPasserellidae+124%
Black-headed GrosbeakCardinalidae+126%
Field SparrowPasserellidae+131%
Cooper's HawkAccipitridae+156%
Northern CardinalCardinalidae+178%
Short-eared OwlStrigidae+205%
Red-tailed HawkAccipitridae+226%
Blue GrosbeakCardinalidae+269%
Orchard OrioleIcteridae+368%
Cedar WaxwingBombycillidae+389%
Bald EagleAccipitridae+394%
Yellow-breasted ChatIcteriidae+573%
Chipping SparrowPasserellidae+612%
Song SparrowPasserellidae+621%
House FinchFringillidae+837%
Spotted TowheePasserellidae12×
Wild TurkeyPhasianidae45×
Turkey VultureCathartidae57×
Eurasian Collared-DoveColumbidae101×

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