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

Abert's Towhee In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsArid-land birds

Abert's Towhee in Sonoran and Mojave Deserts has surged: up 209% on the route-weighted index since 1971.

+209%Since 1971
29Routes In Region
55Years

Notable Signals

long arc increasecomputed index

Abert's Towhee has surged in Sonoran and Mojave Deserts: up 209% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Abert's Towhee in Sonoran and Mojave Deserts is projected to rise about 139% by 2029 — from 0.70 in 2024 to a central estimate of 1.7 (95% range 0.67–2.7). A 5-year backtest shows a typical error of ±119.4%, with 40% of held-out values landing inside the 95% band.

+139%Change by 2029
1.7Projected 2029 index
0.67–2.795% range
±119.4%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
20271.60.642.6
20281.70.652.7
20291.70.672.7

Routes In Sonoran and Mojave Deserts

Routes recording Abert's Towhee in Sonoran and Mojave Deserts.
Casa GrandeARIZONA102023
NilandCALIFORNIA102024
BrawleyCALIFORNIA92001
Parker DamCALIFORNIA62007
FlorenceARIZONA51988
Cactus ForestARIZONA52024
LagunaARIZONA42019
Palo VerdeARIZONA42013
ArabyARIZONA42023
WickenburgARIZONA42023
Coachella CnCALIFORNIA42000
BlytheCALIFORNIA41979
New RiverARIZONA32016
DatelandARIZONA32021
RivieraARIZONA32021
Palo Verde 2ARIZONA32024
Imperial DamCALIFORNIA32006
Alamo Res.ARIZONA22023
Cibola LakeARIZONA22024
Cutter 2ARIZONA22017
GlamisCALIFORNIA22017
Havasu LakeCALIFORNIA22003
CoolidgeARIZONA11985
Red RockARIZONA12006
Red Rock 2ARIZONA12024

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