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

Bendire's Thrasher In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Bendire's Thrasher in Southern Rockies / Colorado Plateau has collapsed: down 99% on the route-weighted index since 1970.

-99%Since 1970
34Routes In Region
54Years

Notable Signals

long arc declinecomputed index

Bendire's Thrasher has collapsed in Southern Rockies / Colorado Plateau: down 99% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Bendire's Thrasher in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.37). A 5-year backtest shows a typical error of ±2303.6%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.00Projected 2029 index
0.00–0.3795% range
±2303.6%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
20250.000.000.37
20260.000.000.37
20270.000.000.37
20280.000.000.37
20290.000.000.37

Routes In Southern Rockies / Colorado Plateau

Routes recording Bendire's Thrasher in Southern Rockies / Colorado Plateau.
YampaiARIZONA51973
DatilNEW-MEXICO51995
Mt TrumbullARIZONA41980
ZeniffARIZONA31968
PageARIZONA32007
Cane Spr DesUTAH31999
Round RockARIZONA21989
Navajo TrailARIZONA22017
NageesiNEW-MEXICO22005
CrownpointNEW-MEXICO21995
Fence LakeNEW-MEXICO21981
Horse SpgsNEW-MEXICO22002
Horse MtnNEW-MEXICO21977
CounselorNEW-MEXICO21999
Cerro VerdeNEW-MEXICO22021
ShivwitzUTAH22004
Dixie NfUTAH21995
OraibiARIZONA11996
HuntARIZONA12006
Many FarmsARIZONA11994
KaibitoARIZONA12016
FarmingtonNEW-MEXICO11987
TorreonNEW-MEXICO12010
CorreoNEW-MEXICO11982
ValenciaNEW-MEXICO11996

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