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

Gray Partridge Population Trend in Idaho

All statesGeneralists

Gray Partridge in Idaho has declined: down 39% on the route-weighted index since 1978.

-39%Since 1978
27Routes In State
38Years

Notable Gray Partridge Trends in Idaho

No notable trend signals for Gray Partridge in Idaho. See the full index history below.

Gray Partridge Population Forecast in Idaho

If the recent trend holds, Gray Partridge in Idaho is projected to stay roughly flat through 2029, near 0.13 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±100.5%, with 100% of held-out values landing inside the 95% band.

+6%Change by 2029
0.13Projected 2029 index
0.00–0.2895% range
±100.5%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
20250.130.000.28
20260.130.000.28
20270.130.000.28
20280.130.000.28
20290.130.000.28

Gray Partridge Survey Routes in Idaho

Routes recording Gray Partridge in Idaho.
Picabo820142014
Gifford320101973
Lost River320001999
Baker320191978
Mud Lake320111990
Pasadena Val320121987
Blackft Res220162016
Leadore220182011
Dubois220101988
Blacks Creek219771977
Ririe220111998
Pocatello220112003
Crane Creek220101993
Iron Springs220242024
Dougal Res220192019
Daniels Res220071988
Preston219881988
Twin Buttes120001986
Kyle Canyon119871987
Tractor Flat119991987
Springfield120032003
Acequia119911990
Henry119811981
Joel120241989
Carey120152002

Gray Partridge Population Trend in Other States

illinoisindianaiowaminnesotamontananebraskanevadanew-yorknorth-dakotaoregonsouth-dakotautahwashingtonwisconsinwyoming

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