BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Crissal Thrasher In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Crissal Thrasher in Southern Rockies / Colorado Plateau has surged: up 83% on the route-weighted index since 1996.

+83%Since 1996
8Routes In Region
21Years

Notable Signals

No notable trend signals for Crissal Thrasher in Southern Rockies / Colorado Plateau. See the full index history below.

Forecast

If the recent trend holds, Crissal Thrasher in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2024, near 0.04 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±79.7%, with 40% of held-out values landing inside the 95% band.

n/aChange by 2024
0.04Projected 2024 index
0.00–0.0995% range
±79.7%Backtest error
19942024
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
20200.040.000.08
20210.040.000.08
20220.040.000.08
20230.040.000.09
20240.040.000.09

Routes In Southern Rockies / Colorado Plateau

Routes recording Crissal Thrasher in Southern Rockies / Colorado Plateau.
ShivwitzUTAH72019
ToroweapARIZONA32018
OraibiARIZONA22018
Navajo TrailARIZONA22018
Peach SpringARIZONA12005
SeligmanARIZONA12009
TorreonNEW-MEXICO11996
McgaffeyNEW-MEXICO11996

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