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

Snowy Egret Population Trend in Utah

All statesWetland birds

Snowy Egret in Utah has edged up: up 11% on the route-weighted index since 1970.

+11%Since 1970TrendPercent 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 →
12Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
46YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

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

No notable trend signals for Snowy Egret in Utah. See the full index history below.

Snowy Egret Population Forecast in Utah

If the recent trend holds, Snowy Egret in Utah is projected to fall about 55% by 2028 — from 0.61 in 2023 to a central estimate of 0.28 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±603.7%, with 100% of held-out values landing inside the 95% band.

-55%Change by 2028TrendPercent 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 →
0.28Projected 2028 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–1.495% 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 →
±603.7%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 Utah is projected to fall about 55% by 2028 — from 0.61 in 2023 to a central estimate of 0.28 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±603.7%, with 100% of held-out values landing inside the 95% band.19682028
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 →
20240.310.001.4
20250.300.001.4
20260.290.001.4
20270.290.001.4
20280.280.001.4

Snowy Egret Survey Routes in Utah

Routes recording Snowy Egret in Utah.
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 →
Bear River4020231992
Delta1820051988
Neponset Res720181997
Oak City220041981
Stock Res219951995
Promontory119861973
Timpie Spg120001986
Goshen120071968
Kamas120102010
Aneth120101991
Randolph120181992
Callao120191992

Snowy Egret Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianakansaslouisianamainemarylandmassachusettsmississippimissourinebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaoklahomaoregonrhode-islandsouth-carolinasouth-dakotatennesseetexasvirginiawisconsinwyoming

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