BirdAnalyst
Guild · New Mexico · BBS 2025 Release · 1966–2024

Grassland Birds In New Mexico

All statesNew Mexico

11 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 New Mexico, down 48% since 1970.

Forecast

If the recent trend holds, Grassland birds in New Mexico is projected to fall about 41% by 2029 — from 8.2 in 2024 to a central estimate of 4.8 (95% range 0.00–11). A 5-year backtest shows a typical error of ±17.7%, with 100% of held-out values landing inside the 95% band.

-41%Change by 2029
4.8Projected 2029 index
0.00–1195% range
±17.7%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
20255.70.0012
20265.40.0012
20275.20.0011
20285.00.0011
20294.80.0011

Member Species In New Mexico

Grassland birds species in New Mexico.
DickcisselCardinalidae-76%
Lark BuntingPasserellidae-67%
Savannah SparrowPasserellidae-66%
Horned LarkAlaudidae-63%
Ring-necked PheasantPhasianidae-63%
Western MeadowlarkIcteridae-49%
Cassin's SparrowPasserellidae+2%
Northern BobwhiteOdontophoridae+79%
Grasshopper SparrowPasserellidae+135%
Lark SparrowPasserellidae+195%
Vesper SparrowPasserellidae+437%

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