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

Long-billed Curlew In Northern Rockies

All regionsNorthern RockiesShorebirds

Long-billed Curlew in Northern Rockies has surged: up 76% on the route-weighted index since 1970.

+76%Since 1970
78Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Long-billed Curlew has surged in Northern Rockies: up 76% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Long-billed Curlew in Northern Rockies is projected to stay roughly flat through 2029, near 1.2 (95% range 0.64–1.8). A 5-year backtest shows a typical error of ±15%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
1.2Projected 2029 index
0.64–1.895% range
±15%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
20251.20.621.8
20261.20.631.8
20271.20.631.8
20281.20.631.8
20291.20.641.8

Routes In Northern Rockies

Routes recording Long-billed Curlew in Northern Rockies.
Big SandyWYOMING342024
Red RockMONTANA292023
Wolf CreekMONTANA282022
BoulderMONTANA262024
BeaverheadMONTANA182024
GlenMONTANA112024
RaynesfordMONTANA92024
RandolphUTAH92024
Sawtooth CtyIDAHO82014
LimaMONTANA82024
Muddy CreekMONTANA82015
Pryor Mtn.MONTANA82024
Brunzell SloughMONTANA72024
PolsonMONTANA62024
Heart ButteMONTANA62024
FontenelleWYOMING62024
Mtn ViewWYOMING51983
AugustaMONTANA42024
Pablo Res.MONTANA42017
St. Mary 2MONTANA42023
Fort LoganMONTANA42024
Summit PrOREGON42024
CabartonIDAHO32014
EllistonMONTANA32024
Freeman CreekMONTANA32016

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