Guild · New Hampshire · BBS 2025 Release · 1966–2024

Grassland Birds In New Hampshire

5 species in this guild. As a group they are -45% since 1968.

Guild Signals

guild collapsecomputed index

Grassland birds as a group have declined in New Hampshire, down 45% since 1968.

Forecast

If the recent trend holds, Grassland birds in New Hampshire is projected to fall about 11% by 2029 — from 1.7 in 2024 to a central estimate of 1.5 (95% range 0.49–2.5). A 5-year backtest shows a typical error of ±8.1%, with 100% of held-out values landing inside the 95% band.

-11%Change by 2029

1.5Projected 2029 index

0.49–2.595% range

±8.1%Backtest error

Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.

Year	Projected index	95% low	95% high
2025	1.6	0.60	2.6
2026	1.6	0.58	2.6
2027	1.6	0.55	2.6
2028	1.5	0.52	2.5
2029	1.5	0.49	2.5

Member Species In New Hampshire

Grassland birds species in New Hampshire.

Eastern Meadowlark	Icteridae	-99%
Vesper Sparrow	Passerellidae	-86%
Ring-necked Pheasant	Phasianidae	-66%
Bobolink	Icteridae	-63%
Savannah Sparrow	Passerellidae	-59%

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