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

Ruddy Duck In Northern Rockies

All regionsNorthern RockiesWaterfowl

Ruddy Duck in Northern Rockies has surged: up 278% on the route-weighted index since 1978.

+278%Since 1978
32Routes In Region
48Years

Notable Signals

long arc increasecomputed index

Ruddy Duck has surged in Northern Rockies: up 278% on the route-weighted index since 1978.

Forecast

If the recent trend holds, Ruddy Duck in Northern Rockies is projected to rise about 93% by 2029 — from 0.11 in 2024 to a central estimate of 0.20 (95% range 0.09–0.32). A 5-year backtest shows a typical error of ±61.2%, with 80% of held-out values landing inside the 95% band.

+93%Change by 2029
0.20Projected 2029 index
0.09–0.3295% range
±61.2%Backtest error
19732029
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
20250.200.080.31
20260.200.080.31
20270.200.080.32
20280.200.090.32
20290.200.090.32

Routes In Northern Rockies

Routes recording Ruddy Duck in Northern Rockies.
Saleratus CrUTAH132018
Neponset ResUTAH112018
Hunter PeakWYOMING82010
MadrasOREGON62022
SeedskadeeWYOMING52015
Carter 2WYOMING52024
NaplesIDAHO42023
Ne EntranceWYOMING42021
BeaverheadMONTANA31996
Red RockMONTANA32019
LamontWYOMING32004
PathfinderWYOMING32022
Mtn ViewWYOMING31991
Rock RiverWYOMING32016
PolsonMONTANA21996
Wise RiverMONTANA22006
ChewelahWASHINGTON22016
Omak CreekWASHINGTON22024
LaurierWASHINGTON22017
L Pend O NwrWASHINGTON22024
NowoodWYOMING22024
KalispellMONTANA12002
AugustaMONTANA12018
Pablo Res.MONTANA12024
Willow Creek 2MONTANA12024

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