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

Field Sparrow Population Trend in New Hampshire

All statesGeneralists

Field Sparrow in New Hampshire has collapsed: down 88% on the route-weighted index since 1968.

-88%Since 1968
25Routes In State
57Years

Notable Field Sparrow Trends in New Hampshire

long arc declinecomputed index

Field Sparrow has collapsed in New Hampshire: down 88% on the route-weighted index since 1968.

Field Sparrow Population Forecast in New Hampshire

If the recent trend holds, Field Sparrow in New Hampshire is projected to fall about 100% by 2029 — from 0.50 in 2024 to a central estimate of 0.00 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±494.1%, with 60% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1.595% range
±494.1%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
20250.000.001.5
20260.000.001.5
20270.000.001.5
20280.000.001.5
20290.000.001.5

Field Sparrow Survey Routes in New Hampshire

Routes recording Field Sparrow in New Hampshire.
Peterborough220191966
Fitzwilliam220241966
Concord220241966
Wilmot220241967
Marlow220241966
Crawford Not219741969
Clarksville219791974
Brentwood119851966
Dover120241966
Hopkinton120241966
Epsom120171966
Strafford120161966
Canterbury120221966
Gilmantn I W120141969
Mt Chocorua119931967
Walpole120241966
Lempster119951971
Jefferson Hl120161966
Franconia120141966
Milan120111970
Stratford120001966
Dixvil Notch119811973
Glen120231975
East Kingston120152015
Dixville Notch 2120232023

Field Sparrow Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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