BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

Sage Thrasher In Badlands and Prairies

All regionsBadlands and PrairiesGeneralists

Sage Thrasher in Badlands and Prairies has declined: down 31% on the route-weighted index since 1970.

-31%Since 1970
53Routes In Region
56Years

Notable Signals

No notable trend signals for Sage Thrasher in Badlands and Prairies. See the full index history below.

Forecast

If the recent trend holds, Sage Thrasher in Badlands and Prairies is projected to fall about 100% by 2029 — from 0.50 in 2024 to a central estimate of 0.00 (95% range 0.00–0.66). A 5-year backtest shows a typical error of ±77%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.6695% range
±77%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
20250.060.000.71
20260.040.000.70
20270.020.000.68
20280.010.000.67
20290.000.000.66

Routes In Badlands and Prairies

Routes recording Sage Thrasher in Badlands and Prairies.
GlenrockWYOMING171977
HighlightWYOMING152007
NatronaWYOMING91992
SavagetonWYOMING92019
BucknumWYOMING72024
WinnettMONTANA62022
Teapot DomeWYOMING61989
JordanMONTANA42017
ClarkelenWYOMING41978
Thunder BasinWYOMING42024
Flatwillow 2MONTANA32021
SchoonoverWYOMING32024
RavenWYOMING32024
ShawneeWYOMING32024
LeroyMONTANA22024
RoyMONTANA22017
BrusettMONTANA22023
FlatwillowMONTANA21992
IngomarMONTANA22024
Jordan SouthMONTANA22024
RoundupMONTANA22018
Custer 2MONTANA22024
RecluseWYOMING22024
UptonWYOMING22024
Harland FlatWYOMING22017

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