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

Grassland Birds In Idaho

All statesIdaho

9 species in this guild. As a group they are -48% since 1970.

Guild Signals

guild collapsecomputed index

Grassland birds as a group have declined in Idaho, down 48% since 1970.

Forecast

If the recent trend holds, Grassland birds in Idaho is projected to fall about 27% by 2029 — from 10 in 2024 to a central estimate of 7.5 (95% range 0.00–15). A 5-year backtest shows a typical error of ±29.9%, with 100% of held-out values landing inside the 95% band.

-27%Change by 2029
7.5Projected 2029 index
0.00–1595% range
±29.9%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
20258.00.4116
20267.90.2916
20277.80.1715
20287.70.0615
20297.50.0015

Member Species In Idaho

Grassland birds species in Idaho.
Lark BuntingPasserellidae-96%
Ring-necked PheasantPhasianidae-92%
Grasshopper SparrowPasserellidae-47%
Western MeadowlarkIcteridae-47%
Savannah SparrowPasserellidae-23%
BobolinkIcteridae+2%
Horned LarkAlaudidae+9%
Lark SparrowPasserellidae+23%
Vesper SparrowPasserellidae+323%

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