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

Great Egret In Great Basin

All regionsGreat BasinWetland birds

Great Egret in Great Basin has fallen sharply: down 59% on the route-weighted index since 1974.

-59%Since 1974
46Routes In Region
52Years

Notable Signals

long arc declinecomputed index

Great Egret has fallen sharply in Great Basin: down 59% on the route-weighted index since 1974.

Forecast

If the recent trend holds, Great Egret in Great Basin is projected to rise about 110% by 2029 — from 0.27 in 2024 to a central estimate of 0.57 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±239.7%, with 80% of held-out values landing inside the 95% band.

+110%Change by 2029
0.57Projected 2029 index
0.00–1.295% range
±239.7%Backtest error
19722029
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
20250.570.001.2
20260.570.001.2
20270.570.001.2
20280.570.001.2
20290.570.001.2

Routes In Great Basin

Routes recording Great Egret in Great Basin.
DorrisCALIFORNIA442019
Fish LakeOREGON252022
Modoc PointOREGON172018
Moses LakeWASHINGTON172021
Modoc Point 2OREGON162024
LikelyCALIFORNIA142024
Honey LakeCALIFORNIA82019
Carson RiverNEVADA72005
Trout CreekOREGON52000
Clear Lk ResCALIFORNIA41999
HikoNEVADA42023
Warner VallyOREGON42023
MacdoelCALIFORNIA32018
PrincetonOREGON31985
Harney LakeOREGON32024
Ruby Valley 2NEVADA22021
UmatillaOREGON22022
MerrillOREGON22018
Catlow RimOREGON22016
Scootney ReservoirWASHINGTON22024
NubieberCALIFORNIA12005
IngallsCALIFORNIA11992
Crowley LakeCALIFORNIA12022
Davis CreekCALIFORNIA12014
MadelineCALIFORNIA12021

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