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

Prairie Warbler Population Trend in New Hampshire

All statesForest birds

Prairie Warbler in New Hampshire has surged: up 201% on the route-weighted index since 1968.

+201%Since 1968
14Routes In State
56Years

Notable Prairie Warbler Trends in New Hampshire

long arc increasecomputed index

Prairie Warbler has surged in New Hampshire: up 201% on the route-weighted index since 1968.

Prairie Warbler Population Forecast in New Hampshire

If the recent trend holds, Prairie Warbler in New Hampshire is projected to stay roughly flat through 2029, near 0.49 (95% range 0.17–0.82). A 5-year backtest shows a typical error of ±48.7%, with 40% of held-out values landing inside the 95% band.

-1%Change by 2029
0.49Projected 2029 index
0.17–0.8295% range
±48.7%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
20250.470.140.79
20260.470.150.80
20270.480.160.80
20280.490.160.81
20290.490.170.82

Prairie Warbler Survey Routes in New Hampshire

Routes recording Prairie Warbler in New Hampshire.
Concord420241967
Hopkinton320221966
Epsom320221969
Fitzwilliam220241992
Canterbury220241969
Gilmantn I W220182018
Marlow220242014
Jefferson Hl220002000
Peterborough120131972
Brentwood119921968
Dover120241966
Strafford120231970
Wilmot120211974
Walpole120212021

Prairie Warbler Population Trend in Other States

alabamaarkansascaliforniaconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamainemarylandmassachusettsmichiganmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsin

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