BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Western Cattle-Egret In Great Basin

All regionsGreat BasinWetland birds

Western Cattle-Egret in Great Basin has fallen sharply: down 57% on the route-weighted index since 1984.

-57%Since 1984TrendPercent 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 →
9Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
21YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable 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 Western Cattle-Egret in Great Basin. See the full index history below.

Western Cattle-Egret In Great Basin Population Forecast

If the recent trend holds, Western Cattle-Egret in Great Basin is projected to stay roughly flat through 2026, near 0.05 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±860.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2026TrendPercent 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 →
0.05Projected 2026 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.2095% 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 →
±860.9%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, Western Cattle-Egret in Great Basin is projected to stay roughly flat through 2026, near 0.05 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±860.9%, with 100% of held-out values landing inside the 95% band.19802026
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 →
20220.050.000.20
20230.050.000.20
20240.050.000.20
20250.050.000.20
20260.050.000.20

Routes In Great Basin

Routes recording Western Cattle-Egret in Great Basin.
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 →
Oak CityUTAH382000
GoshenUTAH72000
FallonNEVADA62013
DeltaUTAH62005
PrestonIDAHO32007
CallaoUTAH22000
DorrisCALIFORNIA11981
Ruby Valley 2NEVADA12021
Bear RiverUTAH12017

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