BirdAnalyst
Species · New Hampshire · BBS 2025 Release · 1966–2024

Savannah Sparrow Population Trend in New Hampshire

All statesGrassland birds

Savannah Sparrow in New Hampshire has fallen sharply: down 59% on the route-weighted index since 1968.

-59%Since 1968
23Routes In State
58Years

Notable Savannah Sparrow Trends in New Hampshire

long arc declinecomputed index

Savannah Sparrow has fallen sharply in New Hampshire: down 59% on the route-weighted index since 1968.

Savannah Sparrow Population Forecast in New Hampshire

If the recent trend holds, Savannah Sparrow in New Hampshire is projected to fall about 31% by 2029 — from 1.0 in 2024 to a central estimate of 0.72 (95% range 0.04–1.4). A 5-year backtest shows a typical error of ±31.2%, with 100% of held-out values landing inside the 95% band.

-31%Change by 2029
0.72Projected 2029 index
0.04–1.495% range
±31.2%Backtest error
19662029
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
20250.770.081.5
20260.760.071.4
20270.750.061.4
20280.740.051.4
20290.720.041.4

Savannah Sparrow Survey Routes in New Hampshire

Routes recording Savannah Sparrow in New Hampshire.
Dixvil Notch1120171966
Dixville Notch 2720242018
Franconia620241966
Stratford320241966
Walpole220221967
Milan220221966
Clarksville220241966
Glen220241975
Peterborough119791970
Brentwood119731967
Fitzwilliam120221966
Dover120041973
Hopkinton120221969
Epsom119671967
Concord120231970
Canterbury120221970
Gilmantn I W120241975
Wilmot120161977
Mt Chocorua120192009
Marlow120241976
Lempster120242017
Jefferson Hl120211967
Jeffers Ntch120072001

Savannah Sparrow Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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