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

Western Grebe In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsWetland birds

Western Grebe in Sonoran and Mojave Deserts has surged: up 99% on the route-weighted index since 1997.

+99%Since 1997
5Routes In Region
20Years

Notable Signals

long arc increasecomputed index

Western Grebe has surged in Sonoran and Mojave Deserts: up 99% on the route-weighted index since 1997.

Forecast

If the recent trend holds, Western Grebe in Sonoran and Mojave Deserts is projected to stay roughly flat through 2028, near 0.08 (95% range 0.00–0.17). A 5-year backtest shows a typical error of ±60.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.08Projected 2028 index
0.00–0.1795% range
±60.4%Backtest error
19942028
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
20240.080.000.17
20250.080.000.17
20260.080.000.17
20270.080.000.17
20280.080.000.17

Routes In Sonoran and Mojave Deserts

Routes recording Western Grebe in Sonoran and Mojave Deserts.
Cibola LakeARIZONA42017
Ash MeadowsNEVADA22001
Alamo Res.ARIZONA12023
ArabyARIZONA12021
NelsonNEVADA12007

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