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

Killdeer In Northern Rockies

All regionsNorthern RockiesShorebirds

Killdeer in Northern Rockies has fallen sharply: down 55% on the route-weighted index since 1970.

-55%Since 1970
196Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Killdeer has fallen sharply in Northern Rockies: down 55% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Killdeer in Northern Rockies is projected to fall about 58% by 2029 — from 2.4 in 2024 to a central estimate of 1.0 (95% range 0.00–2.8). A 5-year backtest shows a typical error of ±28.9%, with 100% of held-out values landing inside the 95% band.

-58%Change by 2029
1.0Projected 2029 index
0.00–2.895% range
±28.9%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
20251.40.003.1
20261.30.003.0
20271.20.002.9
20281.10.002.8
20291.00.002.8

Routes In Northern Rockies

Routes recording Killdeer in Northern Rockies.
Pablo Res.MONTANA252024
SpartaOREGON202001
Green RiverWYOMING201984
Patrick DrawWYOMING191980
Seedskadee 2WYOMING182024
CascadeIDAHO171984
Willow Creek 2MONTANA162024
CodyWYOMING142024
LaurelMONTANA112022
KalispellMONTANA102024
Willow CreekMONTANA101981
Wolf CreekMONTANA102022
NowoodWYOMING92024
PathfinderWYOMING92024
WalcottWYOMING92024
RaynesfordMONTANA82024
Fort LoganMONTANA82024
BridgeportOREGON82022
Neponset ResUTAH82018
BasinWYOMING82024
St MaryMONTANA72008
PolsonMONTANA72024
ChewelahWASHINGTON72021
MidvaleWYOMING72024
Threemile WaMONTANA62023

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