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

Wetland Birds In Nevada

All statesNevada

18 species in this guild. As a group they are +787%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1970.

Guild SignalsNotable 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 wetland birds in Nevada. See the full index history below.

Wetland Birds In Nevada Population Forecast

If the recent trend holds, Wetland birds in Nevada is projected to stay roughly flat through 2029, near 2.4 (95% range 0.00–12). A 5-year backtest shows a typical error of ±74.4%, with 100% of held-out values landing inside the 95% band.

-6%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 →
2.4Projected 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 →
0.00–1295% 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 →
±74.4%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, Wetland birds in Nevada is projected to stay roughly flat through 2029, near 2.4 (95% range 0.00–12). A 5-year backtest shows a typical error of ±74.4%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20252.50.0012
20262.50.0012
20272.50.0012
20282.40.0012
20292.40.0012

Member Species In Nevada

Wetland birds species in Nevada.
TrendPercent 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 →
Western GrebePodicipedidae-93%
Black-crowned Night HeronArdeidae-90%
Snowy EgretArdeidae-84%
Double-crested CormorantPhalacrocoracidae-80%
Forster's TernLaridae-74%
Pied-billed GrebePodicipedidae-57%
Great EgretArdeidae-29%
Ring-billed GullLaridae-25%
Great Blue HeronArdeidae-25%
Virginia RailRallidae+1%
California GullLaridae+8%
SoraRallidae+42%
American BitternArdeidae+100%
American White PelicanPelecanidae+142%
Sandhill CraneGruidae+286%
American CootRallidae+355%
Eared GrebePodicipedidae20×
White-faced IbisThreskiornithidae30×

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