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

Snowy Egret Population Trend in Maryland

All statesWetland birds

Snowy Egret in Maryland has surged: up 93% on the route-weighted index since 1968.

+93%Since 1968
12Routes In State
58Years

Notable Snowy Egret Trends in Maryland

long arc increasecomputed index

Snowy Egret has surged in Maryland: up 93% on the route-weighted index since 1968.

Snowy Egret Population Forecast in Maryland

If the recent trend holds, Snowy Egret in Maryland is projected to fall about 49% by 2029 — from 0.36 in 2024 to a central estimate of 0.18 (95% range 0.00–0.45). A 5-year backtest shows a typical error of ±63.4%, with 100% of held-out values landing inside the 95% band.

-49%Change by 2029
0.18Projected 2029 index
0.00–0.4595% range
±63.4%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
20250.180.000.45
20260.180.000.45
20270.180.000.45
20280.180.000.45
20290.180.000.45

Snowy Egret Survey Routes in Maryland

Routes recording Snowy Egret in Maryland.
Honga1020241969
Golden Hill320041974
Easton219761976
Cokesbury220241966
Newark220241967
Pt Republic219851985
Elkton119911970
Madison120241967
Sinepuxent119761966
Snow Hill119741967
Berlin120212019
Tall Timbers119751975

Snowy Egret Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianakansaslouisianamainemassachusettsmississippimissourinebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaoklahomaoregonrhode-islandsouth-carolinasouth-dakotatennesseetexasutahvirginiawisconsinwyoming

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