BirdAnalyst
Species · Idaho · BBS 2025 Release · 1966–2024

Killdeer Population Trend in Idaho

All statesShorebirds

Killdeer in Idaho has collapsed: down 84% on the route-weighted index since 1970.

-84%Since 1970
56Routes In State
56Years

Notable Killdeer Trends in Idaho

long arc declinecomputed index

Killdeer has collapsed in Idaho: down 84% on the route-weighted index since 1970.

Killdeer Population Forecast in Idaho

If the recent trend holds, Killdeer in Idaho is projected to fall about 100% by 2029 — from 2.0 in 2024 to a central estimate of 0.00 (95% range 0.00–4.8). A 5-year backtest shows a typical error of ±88.4%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–4.895% range
±88.4%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
20250.410.005.2
20260.200.005.0
20270.000.004.8
20280.000.004.8
20290.000.004.8

Killdeer Survey Routes in Idaho

Routes recording Killdeer in Idaho.
Glenns Ferry5219861968
Acequia1920121979
Cascade1719841968
Blacks Creek1620171968
Cedar Hill1420241989
Baker1220241974
Mud Lake1120231988
Picabo1020211988
Gifford520171971
Springfield520181969
Ririe520231971
Bates520231988
Dougal Res520241988
Blackft Res420181984
Triangle420241985
Iron Springs420241988
Pasadena Val420161987
Naples320231972
Lolo Pass320081995
Pocatello320191979
Joel320241989
Carey320171989
Nezperce Nf319991992
Mivoden220181977
Centerville220191972

Killdeer Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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