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

Great Egret Population Trend in Nevada

All statesWetland birds

Great Egret in Nevada has declined: down 29% on the route-weighted index since 1988.

-29%Since 1988TrendPercent 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 →
15Routes 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 →
33YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Great Egret Trends in NevadaNotable 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 Great Egret in Nevada. See the full index history below.

Great Egret Population Forecast in Nevada

If the recent trend holds, Great Egret in Nevada is projected to rise about 508% by 2029 — from 0.07 in 2024 to a central estimate of 0.43 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±524.4%, with 100% of held-out values landing inside the 95% band.

+508%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 →
0.43Projected 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 →
0.00–1.695% 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 →
±524.4%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, Great Egret in Nevada is projected to rise about 508% by 2029 — from 0.07 in 2024 to a central estimate of 0.43 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±524.4%, with 100% of held-out values landing inside the 95% band.19852029
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 →
20250.430.001.6
20260.430.001.6
20270.430.001.6
20280.430.001.6
20290.430.001.6

Great Egret Survey Routes in Nevada

Routes recording Great Egret in Nevada.
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 →
Carson River720052001
Beatty520142014
Hiko420232001
Ash Meadows320142014
Ruby Valley 2220212004
Chimney Res.120152005
Virgin Creek120162016
Nixon119911991
Toiyabe Nf119881988
Majors Place120191991
Gardnerville120121995
Fallon120241994
Dobbin Creek120181985
Gardnerville 2120242013
Darroughs Hot Spgs120142014

Great Egret Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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