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

Willet In Northern Rockies

All regionsNorthern RockiesShorebirds

Willet in Northern Rockies has increased: up 32% on the route-weighted index since 1974.

+32%Since 1974
52Routes In Region
51Years

Notable Signals

No notable trend signals for Willet in Northern Rockies. See the full index history below.

Forecast

If the recent trend holds, Willet in Northern Rockies is projected to rise about 82% by 2029 — from 0.37 in 2024 to a central estimate of 0.67 (95% range 0.17–1.2). A 5-year backtest shows a typical error of ±84.1%, with 80% of held-out values landing inside the 95% band.

+82%Change by 2029
0.67Projected 2029 index
0.17–1.295% range
±84.1%Backtest error
19692029
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
20250.660.161.2
20260.660.161.2
20270.670.171.2
20280.670.171.2
20290.670.171.2

Routes In Northern Rockies

Routes recording Willet in Northern Rockies.
Fiddler LkWYOMING572006
RyegrassWYOMING222024
MeeteetseWYOMING142019
Rock RiverWYOMING112022
DanielWYOMING101988
BeaverheadMONTANA82024
Neponset ResUTAH82018
WickiupOREGON62011
RandolphUTAH62024
E. Bear LakeUTAH62022
HarmonyWYOMING52023
Saleratus CrUTAH42017
Soda LakeWYOMING42024
PolsonMONTANA31994
LimaMONTANA31999
CumberlandWYOMING32024
BoulderWYOMING32018
SeedskadeeWYOMING32014
Red RockMONTANA22008
St. Mary 2MONTANA22024
East Glacier ParkMONTANA22018
WoodruffUTAH22023
Crawford MtsUTAH22015
CrowheartWYOMING21987
GeboWYOMING21997

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