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

Bewick's Wren In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsForest birds

Bewick's Wren in Sonoran and Mojave Deserts has risen sharply: up 68% on the route-weighted index since 1970.

+68%Since 1970
46Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Bewick's Wren has risen sharply in Sonoran and Mojave Deserts: up 68% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Bewick's Wren in Sonoran and Mojave Deserts is projected to rise about 15% by 2029 — from 1.4 in 2024 to a central estimate of 1.7 (95% range 0.66–2.7). A 5-year backtest shows a typical error of ±63.1%, with 100% of held-out values landing inside the 95% band.

+15%Change by 2029
1.7Projected 2029 index
0.66–2.795% range
±63.1%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
20251.60.602.6
20261.60.622.6
20271.60.632.6
20281.60.642.6
20291.70.662.7

Routes In Sonoran and Mojave Deserts

Routes recording Bewick's Wren in Sonoran and Mojave Deserts.
WikieupARIZONA352019
PearblossomCALIFORNIA122024
Joshua TreeCALIFORNIA112000
Kelso ValleyCALIFORNIA102024
OnyxCALIFORNIA82001
Willow SpgsCALIFORNIA81981
Lone PineCALIFORNIA82024
Cutter 2ARIZONA72018
Ash MeadowsNEVADA62024
DatelandARIZONA42016
Anza BorregoCALIFORNIA42024
IvanpahCALIFORNIA42019
CimaCALIFORNIA42013
FlorenceARIZONA31988
DarwinCALIFORNIA31998
Coachella CnCALIFORNIA32013
Squaw PeakARIZONA21968
New RiverARIZONA22009
Alamo Res.ARIZONA22023
Red RockARIZONA22001
Cactus ForestARIZONA22023
Valley WellsCALIFORNIA22015
BeattyNEVADA22024
Jean LakeNEVADA22013
OatmanARIZONA12006

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