BirdAnalyst
Guild · Indiana · BBS 2026 Release · 1966–2025

Forest Birds In Indiana

All statesIndiana

61 species in this guild. As a group they are +5%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 1968.

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 forest birds in Indiana. See the full index history below.

Forest Birds In Indiana Population Forecast

If the recent trend holds, Forest birds in Indiana is projected to rise about 15% by 2030 — from 5.1 in 2025 to a central estimate of 5.8 (95% range 5.0–6.7). A 5-year backtest shows a typical error of ±12.6%, with 60% of held-out values landing inside the 95% band.

+15%Change by 2030TrendPercent 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 →
5.8Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
5.0–6.795% 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 →
±12.6%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, Forest birds in Indiana is projected to rise about 15% by 2030 — from 5.1 in 2025 to a central estimate of 5.8 (95% range 5.0–6.7). A 5-year backtest shows a typical error of ±12.6%, with 60% of held-out values landing inside the 95% band.19662030
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 →
20265.84.96.7
20275.85.06.7
20285.85.06.7
20295.85.06.7
20305.85.06.7

Member Species In Indiana

Forest birds species in Indiana.
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 →
Marsh WrenTroglodytidae-81%
Black-billed CuckooCuculidae-81%
Yellow-billed CuckooCuculidae-76%
Yellow-breasted ChatIcteriidae-59%
Field SparrowPasserellidae-57%
Cerulean WarblerParulidae-56%
Black-and-white WarblerParulidae-55%
Brown ThrasherMimidae-50%
Red-headed WoodpeckerPicidae-35%
Ruby-throated HummingbirdTrochilidae-25%
Indigo BuntingCardinalidae-19%
Song SparrowPasserellidae-11%
Chestnut-sided WarblerParulidae-10%
Prothonotary WarblerParulidae-9%
VeeryTurdidae-7%
Prairie WarblerParulidae-6%
American GoldfinchFringillidae-6%
Blue JayCorvidae-2%
Blue-winged WarblerParulidae-1%
Tufted TitmouseParidae-0%
Eastern BluebirdTurdidae+15%
White-eyed VireoVireonidae+32%
Gray CatbirdMimidae+33%
Common YellowthroatParulidae+33%
Northern CardinalCardinalidae+38%
Downy WoodpeckerPicidae+40%
Summer TanagerCardinalidae+43%
Hairy WoodpeckerPicidae+48%
Eastern TowheePasserellidae+57%
Orchard OrioleIcteridae+66%
Wood ThrushTurdidae+68%
Yellow-throated VireoVireonidae+71%
Carolina ChickadeeParidae+86%
Warbling VireoVireonidae+89%
Red-bellied WoodpeckerPicidae+90%
Yellow WarblerParulidae+93%
Black-capped ChickadeeParidae+99%
Carolina WrenTroglodytidae+102%
Scarlet TanagerCardinalidae+113%
Blue-gray GnatcatcherPolioptilidae+119%
American RobinTurdidae+122%
Kentucky WarblerParulidae+122%
Red-eyed VireoVireonidae+133%
Louisiana WaterthrushParulidae+134%
Baltimore OrioleIcteridae+137%
Northern House WrenTroglodytidae+145%
Pileated WoodpeckerPicidae+171%
Bell's VireoVireonidae+196%
Worm-eating WarblerParulidae+201%
Black-throated Green WarblerParulidae+235%
American RedstartParulidae+284%
Chipping SparrowPasserellidae+302%
Pine WarblerParulidae+380%
Yellow-throated WarblerParulidae+441%
Cedar WaxwingBombycillidae+466%
Rose-breasted GrosbeakCardinalidae+488%
White-breasted NuthatchSittidae+492%
Hooded WarblerParulidae+520%
OvenbirdParulidae14×
Northern ParulaParulidae22×
Blue GrosbeakCardinalidae33×

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.