BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

American Dipper In Northern Rockies

All regionsNorthern RockiesGeneralists

American Dipper in Northern Rockies has risen sharply: up 54% on the route-weighted index since 1973.

+54%Since 1973
71Routes In Region
53Years

Notable Signals

long arc increasecomputed index

American Dipper has risen sharply in Northern Rockies: up 53% on the route-weighted index since 1973.

Forecast

If the recent trend holds, American Dipper in Northern Rockies is projected to rise about 13% by 2029 — from 0.09 in 2024 to a central estimate of 0.10 (95% range 0.00–0.26). A 5-year backtest shows a typical error of ±159.6%, with 100% of held-out values landing inside the 95% band.

+13%Change by 2029
0.10Projected 2029 index
0.00–0.2695% range
±159.6%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
20250.110.000.26
20260.110.000.26
20270.110.000.26
20280.100.000.26
20290.100.000.26

Routes In Northern Rockies

Routes recording American Dipper in Northern Rockies.
N Fork Cda RIDAHO52019
SulaMONTANA31977
Marble CreekIDAHO22023
CobaltIDAHO22013
SunbeamIDAHO22019
Rochat DivdeIDAHO22009
St RegisMONTANA22024
ClintonMONTANA22024
MammothWYOMING22023
YellowstoneWYOMING22012
NaplesIDAHO12002
AveryIDAHO12023
NezperceIDAHO11997
Lolo PassIDAHO12001
GoldenIDAHO12015
CascadeIDAHO11975
Cape HornIDAHO11994
ChallisIDAHO12012
CentervilleIDAHO12009
AlturasIDAHO11968
Nezperce NfIDAHO11999
PierceIDAHO12007
BurgdorfIDAHO12016
Yellow PineIDAHO12015
FeathervilleIDAHO12011

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