BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Mountain Bluebird In Prairie Potholes

All regionsPrairie PotholesForest birds

Mountain Bluebird in Prairie Potholes has fallen sharply: down 61% on the route-weighted index since 1987.

-61%Since 1987
9Routes In Region
34Years

Notable Signals

No notable trend signals for Mountain Bluebird in Prairie Potholes. See the full index history below.

Forecast

If the recent trend holds, Mountain Bluebird in Prairie Potholes is projected to stay roughly flat through 2027, near 0.02 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±188.1%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2027
0.02Projected 2027 index
0.00–0.1295% range
±188.1%Backtest error
19832027
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
20230.030.000.13
20240.030.000.13
20250.030.000.13
20260.030.000.12
20270.020.000.12

Routes In Prairie Potholes

Routes recording Mountain Bluebird in Prairie Potholes.
RedstoneMONTANA22015
Turtle MtnsNORTH-DAKOTA22000
Hay LakeMONTANA12017
SunburstMONTANA11996
ClevelandMONTANA12012
CarpioNORTH-DAKOTA12010
LoraineNORTH-DAKOTA11992
StanleyNORTH-DAKOTA12022
DenbighNORTH-DAKOTA11995

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