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

Pine Warbler Population Trend in New Hampshire

All statesForest birds

Pine Warbler in New Hampshire has surged: up 58× on the route-weighted index since 1968.

58×Since 1968
23Routes In State
58Years

Notable Pine Warbler Trends in New Hampshire

long arc increasecomputed index

Pine Warbler has surged in New Hampshire: up 58× on the route-weighted index since 1968.

Pine Warbler Population Forecast in New Hampshire

If the recent trend holds, Pine Warbler in New Hampshire is projected to stay roughly flat through 2029, near 8.5 (95% range 5.7–11). A 5-year backtest shows a typical error of ±30.3%, with 60% of held-out values landing inside the 95% band.

-2%Change by 2029
8.5Projected 2029 index
5.7–1195% range
±30.3%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
20257.85.111
20268.05.311
20278.15.411
20288.35.611
20298.55.711

Pine Warbler Survey Routes in New Hampshire

Routes recording Pine Warbler in New Hampshire.
Fitzwilliam1720241971
Strafford1720241966
Mt Chocorua1520241967
Canterbury1420241970
Wilmot1420241977
Dover1320241974
Concord1320241967
Lempster1320241997
Hopkinton1220241967
Brentwood1019981977
Marlow920241981
Glen920241975
East Kingston920241999
Gilmantn I W720241970
Walpole720241970
Epsom620231967
Milan620242001
Peterborough520241966
Stratford520242013
Jefferson Hl320241969
Franconia320241971
Crawford Not119701966
Jeffers Ntch119931993

Pine Warbler Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsin

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