BirdAnalyst
Species · BCR 27 · BBS 2026 Release · 1966–2025

Snowy Egret In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainWetland birds

Snowy Egret in Southeastern Coastal Plain has collapsed: down 75% on the route-weighted index since 1968.

-75%Since 1968TrendPercent 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 →
126Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed 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 →

Snowy Egret has collapsed in Southeastern Coastal Plain: down 75% on the route-weighted index since 1968.

Snowy Egret In Southeastern Coastal Plain Population Forecast

If the recent trend holds, Snowy Egret in Southeastern Coastal Plain is projected to rise about 19% by 2030 — from 0.28 in 2025 to a central estimate of 0.33 (95% range 0.00–0.91). A 5-year backtest shows a typical error of ±71.2%, with 100% of held-out values landing inside the 95% band.

+19%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 →
0.33Projected 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 →
0.00–0.9195% 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 →
±71.2%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, Snowy Egret in Southeastern Coastal Plain is projected to rise about 19% by 2030 — from 0.28 in 2025 to a central estimate of 0.33 (95% range 0.00–0.91). A 5-year backtest shows a typical error of ±71.2%, with 100% 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 →
20260.340.000.91
20270.340.000.91
20280.340.000.91
20290.340.000.91
20300.330.000.91

Routes In Southeastern Coastal Plain

Routes recording Snowy Egret in Southeastern Coastal Plain.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Alabama Pt 2ALABAMA242005
Kiawah IslandSOUTH-CAROLINA182025
ElbertaALABAMA172022
Alabama PtALABAMA162002
GrangeburgALABAMA152024
CottonGEORGIA111984
LatimerMISSISSIPPI112004
St Vincent IFLORIDA102025
DaleSOUTH-CAROLINA91998
JacksonboroGEORGIA82016
CovingtonFLORIDA72001
DickeyGEORGIA52018
Jarvisburg 2NORTH-CAROLINA52019
MadridALABAMA42000
PinettaFLORIDA42015
Port St Joe 2FLORIDA42017
StocktonGEORGIA41977
PineoraGEORGIA42010
Coffee CoGEORGIA41995
LovelacevileKENTUCKY42025
MaconMISSISSIPPI42025
Myrtle GroveNORTH-CAROLINA42025
Dauphin IsALABAMA31990
FoleyALABAMA31972
EufaulaALABAMA31999

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