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

Wetland Birds In Georgia

All statesGeorgia

17 species in this guild. As a group they are -52%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 52% since 1968.

Forecast

If the recent trend holds, Wetland birds in Georgia is projected to fall about 31% by 2029 — from 1.4 in 2024 to a central estimate of 0.98 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±15.3%, with 100% of held-out values landing inside the 95% band.

-31%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 →
0.98Projected 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 →
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 →
±15.3%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, Wetland birds in Georgia is projected to fall about 31% by 2029 — from 1.4 in 2024 to a central estimate of 0.98 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±15.3%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20251.10.052.1
20261.00.032.0
20271.00.012.0
20281.00.002.0
20290.980.002.0

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%
King RailRallidae-89%
Great EgretArdeidae-88%
Green HeronArdeidae-63%
Laughing GullLaridae-59%
Yellow-crowned Night HeronArdeidae-57%
Little Blue HeronArdeidae-56%
Clapper RailRallidae-39%
Double-crested CormorantPhalacrocoracidae-28%
Common GallinuleRallidae-15%
Great Blue HeronArdeidae+8%
Western Cattle-EgretArdeidae+10%
White IbisThreskiornithidae+23%
Pied-billed GrebePodicipedidae+45%

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