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

Grassland Birds In Montana

All statesMontana

13 species in this guild. As a group they are -18% since 1970.

Guild Signals

No notable trend signals for grassland birds in Montana. See the full index history below.

Forecast

If the recent trend holds, Grassland birds in Montana is projected to fall about 24% by 2029 — from 19 in 2024 to a central estimate of 14 (95% range 7.4–21). A 5-year backtest shows a typical error of ±17.1%, with 100% of held-out values landing inside the 95% band.

-24%Change by 2029
14Projected 2029 index
7.4–2195% range
±17.1%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
2025158.021
2026157.921
2027147.721
2028147.621
2029147.421

Member Species In Montana

Grassland birds species in Montana.
Lark BuntingPasserellidae-69%
Lark SparrowPasserellidae-56%
Ring-necked PheasantPhasianidae-28%
Western MeadowlarkIcteridae-13%
Horned LarkAlaudidae-1%
Baird's SparrowPasserellidae+64%
Vesper SparrowPasserellidae+70%
Sprague's PipitMotacillidae+141%
Savannah SparrowPasserellidae+313%
Grasshopper SparrowPasserellidae+490%
DickcisselCardinalidae+859%
BobolinkIcteridae+926%
Upland SandpiperScolopacidae+937%

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