BirdAnalyst
Species · BCR 33 · BBS 2025 Release · 1966–2024

Snowy Egret In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsWetland birds

Snowy Egret in Sonoran and Mojave Deserts has fallen sharply: down 58% on the route-weighted index since 1974.

-58%Since 1974
19Routes In Region
50Years

Notable Signals

long arc declinecomputed index

Snowy Egret has fallen sharply in Sonoran and Mojave Deserts: down 58% on the route-weighted index since 1974.

Forecast

If the recent trend holds, Snowy Egret in Sonoran and Mojave Deserts is projected to fall about 63% by 2029 — from 0.13 in 2024 to a central estimate of 0.05 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±52.3%, with 100% of held-out values landing inside the 95% band.

-63%Change by 2029
0.05Projected 2029 index
0.00–2.695% range
±52.3%Backtest error
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 index95% low95% high
20250.160.002.7
20260.130.002.7
20270.100.002.6
20280.080.002.6
20290.050.002.6

Routes In Sonoran and Mojave Deserts

Routes recording Snowy Egret in Sonoran and Mojave Deserts.
Red RockARIZONA71999
ArabyARIZONA62022
CimaCALIFORNIA61977
Palo VerdeCALIFORNIA52003
Palo VerdeARIZONA32012
Palo Verde 2ARIZONA32024
BrawleyCALIFORNIA32010
LagunaARIZONA22019
AjoARIZONA22001
Ajo 2ARIZONA22019
FlorenceARIZONA11968
Casa GrandeARIZONA12018
Cutter 2ARIZONA12016
Red Rock 2ARIZONA12019
Calif CityCALIFORNIA11995
NilandCALIFORNIA12024
Alamo RiverCALIFORNIA12018
Imperial DamCALIFORNIA12010
Ash MeadowsNEVADA12016

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