BirdAnalyst
Guild · South Dakota · BBS 2025 Release · 1966–2024

Generalists In South Dakota

All statesSouth Dakota

67 species in this guild. As a group they are -37%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 South Dakota. See the full index history below.

Generalists In South Dakota Population Forecast

If the recent trend holds, Generalists in South Dakota is projected to fall about 35% by 2029 — from 5.5 in 2024 to a central estimate of 3.6 (95% range 1.0–6.1). A 5-year backtest shows a typical error of ±35.3%, with 100% of held-out values landing inside the 95% band.

-35%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 →
3.6Projected 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 →
1.0–6.195% 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 →
±35.3%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 South Dakota is projected to fall about 35% by 2029 — from 5.5 in 2024 to a central estimate of 3.6 (95% range 1.0–6.1). A 5-year backtest shows a typical error of ±35.3%, 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 →
20253.91.36.4
20263.81.26.4
20273.71.26.3
20283.61.16.2
20293.61.06.1

Member Species In South Dakota

Generalists species in South Dakota.
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 →
Black-billed CuckooCuculidae-94%
Pine SiskinFringillidae-90%
Great Horned OwlStrigidae-85%
Clark's NutcrackerCorvidae-79%
Chestnut-collared LongspurCalcariidae-77%
Blue JayCorvidae-64%
House SparrowPasseridae-58%
Brown ThrasherMimidae-55%
Northern MockingbirdMimidae-55%
Loggerhead ShrikeLaniidae-54%
Common GrackleIcteridae-52%
Northern HarrierAccipitridae-49%
Belted KingfisherAlcedinidae-44%
Field SparrowPasserellidae-41%
House FinchFringillidae-39%
Yellow-billed CuckooCuculidae-36%
Cassin's FinchFringillidae-36%
Red-winged BlackbirdIcteridae-25%
Brewer's SparrowPasserellidae-20%
American CrowCorvidae-19%
Pinyon JayCorvidae-18%
Gray PartridgePhasianidae-16%
Yellow-headed BlackbirdIcteridae-12%
American GoldfinchFringillidae-12%
Mourning DoveColumbidae-6%
Red CrossbillFringillidae-5%
Black-billed MagpieCorvidae-4%
Eastern Screech-OwlStrigidae-1%
Burrowing OwlStrigidae+5%
Swainson's HawkAccipitridae+16%
Orchard OrioleIcteridae+22%
Prairie FalconFalconidae+24%
Baltimore OrioleIcteridae+25%
American KestrelFalconidae+26%
Chipping SparrowPasserellidae+29%
Sharp-shinned HawkAccipitridae+30%
Lazuli BuntingCardinalidae+31%
Brown-headed CowbirdIcteridae+32%
Golden EagleAccipitridae+35%
European StarlingSturnidae+39%
Rock PigeonColumbidae+46%
Turkey VultureCathartidae+56%
Clay-colored SparrowPasserellidae+66%
OspreyPandionidae+78%
Indigo BuntingCardinalidae+106%
Swamp SparrowPasserellidae+110%
Cooper's HawkAccipitridae+127%
Blue GrosbeakCardinalidae+149%
Gray CatbirdMimidae+173%
Song SparrowPasserellidae+188%
Red-tailed HawkAccipitridae+206%
Western TanagerCardinalidae+206%
Northern CardinalCardinalidae+206%
Rose-breasted GrosbeakCardinalidae+241%
Sharp-tailed GrousePhasianidae+248%
Spotted TowheePasserellidae+250%
Canada JayCorvidae+259%
Brewer's BlackbirdIcteridae+308%
Bullock's OrioleIcteridae+394%
Short-eared OwlStrigidae+465%
Cedar WaxwingBombycillidae+582%
Yellow-breasted ChatIcteriidae+595%
Black-headed GrosbeakCardinalidae+603%
Ferruginous HawkAccipitridae+616%
Bald EagleAccipitridae+664%
Wild TurkeyPhasianidae15×
Eurasian Collared-DoveColumbidae18×

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