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

Mountain Chickadee In Badlands and Prairies

All regionsBadlands and PrairiesForest birds

Mountain Chickadee in Badlands and Prairies has surged: up 565% on the route-weighted index since 1980.

+565%Since 1980
6Routes In Region
42Years

Notable Signals

long arc increasecomputed index

Mountain Chickadee has surged in Badlands and Prairies: up 565% on the route-weighted index since 1980.

Forecast

If the recent trend holds, Mountain Chickadee in Badlands and Prairies is projected to fall about 47% by 2029 — from 0.39 in 2024 to a central estimate of 0.20 (95% range 0.02–0.39). A 5-year backtest shows a typical error of ±76.6%, with 0% of held-out values landing inside the 95% band.

-47%Change by 2029
0.20Projected 2029 index
0.02–0.3995% range
±76.6%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
20250.190.010.37
20260.190.010.38
20270.200.010.38
20280.200.020.39
20290.200.020.39

Routes In Badlands and Prairies

Routes recording Mountain Chickadee in Badlands and Prairies.
Maynard CouleeMONTANA242024
MoskeeWYOMING71985
HighwoodMONTANA31972
Reed PointMONTANA32024
Two DotMONTANA12005
Flatwillow 2MONTANA12017

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