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

Chipping Sparrow In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsGeneralists

Chipping Sparrow in Sonoran and Mojave Deserts has fallen sharply: down 65% on the route-weighted index since 1976.

-65%Since 1976
5Routes In Region
18Years

Notable Signals

long arc declinecomputed index

Chipping Sparrow has fallen sharply in Sonoran and Mojave Deserts: down 65% on the route-weighted index since 1976.

Forecast

If the recent trend holds, Chipping Sparrow in Sonoran and Mojave Deserts is projected to fall about 78% by 2020 — from 0.05 in 2015 to a central estimate of 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±117.1%, with 100% of held-out values landing inside the 95% band.

-78%Change by 2020
0.01Projected 2020 index
0.00–0.1095% range
±117.1%Backtest error
19732020
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
20160.020.000.10
20170.020.000.10
20180.010.000.10
20190.010.000.10
20200.010.000.10

Routes In Sonoran and Mojave Deserts

Routes recording Chipping Sparrow in Sonoran and Mojave Deserts.
Eureka ValCALIFORNIA22015
OnyxCALIFORNIA11998
PearblossomCALIFORNIA11985
Kelso ValleyCALIFORNIA12007
Joshua TreeCALIFORNIA12002

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