Species · BCR 14 · BBS 2025 Release · 1966–2024

Grasshopper Sparrow In Atlantic Northern Forest

All regions Atlantic Northern Forest Grassland birds

Grasshopper Sparrow in Atlantic Northern Forest has fallen sharply: down 64% on the route-weighted index since 1969.

-64%Since 1969

14Routes In Region

30Years

Notable Signals

long arc declinecomputed index

Grasshopper Sparrow has fallen sharply in Atlantic Northern Forest: down 63% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Grasshopper Sparrow in Atlantic Northern Forest is projected to fall about 100% by 2020 — from 0.06 in 2015 to a central estimate of 0.00 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±322.4%, with 40% of held-out values landing inside the 95% band.

-100%Change by 2020

0.00Projected 2020 index

0.00–0.0595% range

±322.4%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
2016	0.00	0.00	0.05
2017	0.00	0.00	0.05
2018	0.00	0.00	0.05
2019	0.00	0.00	0.05
2020	0.00	0.00	0.05

Routes In Atlantic Northern Forest

Routes recording Grasshopper Sparrow in Atlantic Northern Forest.

Benton	MAINE	5	1978
Fitzwilliam	NEW-HAMPSHIRE	2	1970
Franconia	NEW-HAMPSHIRE	2	2015
Harmony	MAINE	1	2015
Cheshire	MASSACHUSETTS	1	1973
Lempster	NEW-HAMPSHIRE	1	2002
Clarksville	NEW-HAMPSHIRE	1	2011
Jeffers Ntch	NEW-HAMPSHIRE	1	2000
Petersburg	NEW-YORK	1	1974
Kasoag	NEW-YORK	1	2015
Highmarket	NEW-YORK	1	1991
Number Four	NEW-YORK	1	1967
Underwood	NEW-YORK	1	1971
S Wallingfrd	VERMONT	1	1993

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