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

Wetland Birds In Georgia

All statesGeorgia

22 species in this guild. As a group they are -70%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 →

guild collapsecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Wetland birds as a group have fallen sharply in Georgia, down 70% since 1968.

Wetland Birds In Georgia Population Forecast

If the recent trend holds, Wetland birds in Georgia is projected to fall about 72% by 2030 — from 1.9 in 2025 to a central estimate of 0.54 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±66%, with 60% of held-out values landing inside the 95% band.

-72%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 →
0.54Projected 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 →
0.00–2.095% 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 →
±66%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, Wetland birds in Georgia is projected to fall about 72% by 2030 — from 1.9 in 2025 to a central estimate of 0.54 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±66%, 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 →
20260.790.002.2
20270.730.002.2
20280.670.002.1
20290.600.002.0
20300.540.002.0

Member Species In Georgia

Wetland birds species in Georgia.
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 →
Snowy EgretArdeidae-98%
Glossy IbisThreskiornithidae-97%
Tricolored HeronArdeidae-96%
Black-crowned Night HeronArdeidae-96%
Boat-tailed GrackleIcteridae-94%
King RailRallidae-89%
Great EgretArdeidae-86%
Red-winged BlackbirdIcteridae-76%
Yellow-crowned Night HeronArdeidae-72%
Belted KingfisherAlcedinidae-67%
Wood StorkCiconiidae-62%
Green HeronArdeidae-62%
Laughing GullLaridae-59%
Little Blue HeronArdeidae-48%
AnhingaAnhingidae-45%
Clapper RailRallidae-39%
Double-crested CormorantPhalacrocoracidae-37%
Common GallinuleRallidae-4%
Great Blue HeronArdeidae+5%
Western Cattle-EgretArdeidae+21%
Pied-billed GrebePodicipedidae+28%
White IbisThreskiornithidae+30%

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