BirdAnalyst
Species · Wisconsin · BBS 2025 Release · 1966–2024

Great Egret Population Trend in Wisconsin

All statesWetland birds

Great Egret in Wisconsin has surged: up 194% on the route-weighted index since 1968.

+194%Since 1968
31Routes In State
56Years

Notable Great Egret Trends in Wisconsin

long arc increasecomputed index

Great Egret has surged in Wisconsin: up 194% on the route-weighted index since 1968.

Great Egret Population Forecast in Wisconsin

If the recent trend holds, Great Egret in Wisconsin is projected to rise about 12% by 2029 — from 0.21 in 2024 to a central estimate of 0.24 (95% range 0.00–0.54). A 5-year backtest shows a typical error of ±85.9%, with 100% of held-out values landing inside the 95% band.

+12%Change by 2029
0.24Projected 2029 index
0.00–0.5495% range
±85.9%Backtest error
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 index95% low95% high
20250.230.000.52
20260.230.000.53
20270.230.000.53
20280.230.000.53
20290.240.000.54

Great Egret Survey Routes in Wisconsin

Routes recording Great Egret in Wisconsin.
Eden720241974
Kiel420222002
Fall River320241984
Paris320231998
Omro 2220242006
Washington I220112010
Cochrane220131968
Viroqua219781978
Rolling Pr220241966
Beaver Dam219971978
Raymond220242000
Hudson120181969
Dresser120062006
Loraine119891989
Esdaile119961985
Gilmanton120001974
Cadott119851985
Mather119861986
Oconto Falls119771977
Omro119951977
Manitowoc119831983
Newburg Crns119781967
Rolling Grnd119911989
Pardeeville120221992
Brownsville120191980

Great Egret Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawyoming

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