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

Crissal Thrasher In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsGeneralists

Crissal Thrasher in Sonoran and Mojave Deserts has collapsed: down 79% on the route-weighted index since 1975.

-79%Since 1975
40Routes In Region
49Years

Notable Signals

long arc declinecomputed index

Crissal Thrasher has collapsed in Sonoran and Mojave Deserts: down 79% on the route-weighted index since 1975.

Forecast

If the recent trend holds, Crissal Thrasher in Sonoran and Mojave Deserts is projected to stay roughly flat through 2029, near 0.26 (95% range 0.00–0.58). A 5-year backtest shows a typical error of ±522.2%, with 80% of held-out values landing inside the 95% band.

n/aChange by 2029
0.26Projected 2029 index
0.00–0.5895% range
±522.2%Backtest error
19722029
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
20250.250.000.57
20260.250.000.57
20270.250.000.57
20280.260.000.58
20290.260.000.58

Routes In Sonoran and Mojave Deserts

Routes recording Crissal Thrasher in Sonoran and Mojave Deserts.
New RiverARIZONA52010
WikieupARIZONA42005
CottonwoodCALIFORNIA31980
OatmanARIZONA22000
DatelandARIZONA22016
AjoARIZONA22001
Cabeza PrietARIZONA22019
Casa GrandeARIZONA22019
Cutter 2ARIZONA22017
GlamisCALIFORNIA21995
IvanpahCALIFORNIA22019
BeattyNEVADA22006
QuartzsiteARIZONA12017
FlorenceARIZONA11972
LagunaARIZONA12009
LukevilleARIZONA11980
RivieraARIZONA12021
Alamo Res.ARIZONA12016
Cibola LakeARIZONA12018
Gila BendARIZONA12024
Palo VerdeARIZONA12009
ArabyARIZONA12023
Red RockARIZONA11998
Ajo 2ARIZONA12017
Organ PipeARIZONA12021

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