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

Curve-billed Thrasher In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsArid-land birds

Curve-billed Thrasher in Sonoran and Mojave Deserts has edged up: up 18% on the route-weighted index since 1970.

+18%Since 1970
30Routes In Region
56Years

Notable Signals

No notable trend signals for Curve-billed Thrasher in Sonoran and Mojave Deserts. See the full index history below.

Forecast

If the recent trend holds, Curve-billed Thrasher in Sonoran and Mojave Deserts is projected to rise about 70% by 2029 — from 2.0 in 2024 to a central estimate of 3.3 (95% range 0.79–5.9). A 5-year backtest shows a typical error of ±31.8%, with 100% of held-out values landing inside the 95% band.

+70%Change by 2029
3.3Projected 2029 index
0.79–5.995% range
±31.8%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
20253.20.675.8
20263.30.705.8
20273.30.735.8
20283.30.765.9
20293.30.795.9

Routes In Sonoran and Mojave Deserts

Routes recording Curve-billed Thrasher in Sonoran and Mojave Deserts.
New RiverARIZONA482016
Organ PipeARIZONA292023
Red Rock 2ARIZONA202024
FlorenceARIZONA191988
LukevilleARIZONA171981
Bates WellARIZONA162023
PisinimoARIZONA111993
WikieupARIZONA102024
Cabeza PrietARIZONA102024
Cutter 2ARIZONA102018
Cactus ForestARIZONA92024
WickenburgARIZONA82023
CoolidgeARIZONA71985
RivieraARIZONA52024
Alamo Res.ARIZONA52023
Casa GrandeARIZONA42023
QuartzsiteARIZONA32013
LagunaARIZONA31972
Red RockARIZONA32014
DatelandARIZONA22024
AjoARIZONA22008
Cibola LakeARIZONA22012
Ajo 2ARIZONA22022
Palo Verde 2ARIZONA22024
OatmanARIZONA12019

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