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

Winter Wren Population Trend in New Hampshire

All statesForest birds

Winter Wren in New Hampshire has risen sharply: up 60% on the route-weighted index since 1968.

+60%Since 1968
26Routes In State
58Years

Notable Winter Wren Trends in New Hampshire

long arc increasecomputed index

Winter Wren has risen sharply in New Hampshire: up 60% on the route-weighted index since 1968.

Winter Wren Population Forecast in New Hampshire

If the recent trend holds, Winter Wren in New Hampshire is projected to stay roughly flat through 2029, near 3.7 (95% range 1.4–5.9). A 5-year backtest shows a typical error of ±25%, with 100% of held-out values landing inside the 95% band.

-3%Change by 2029
3.7Projected 2029 index
1.4–5.995% range
±25%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
20253.61.45.8
20263.61.45.8
20273.61.45.8
20283.61.45.9
20293.71.45.9

Winter Wren Survey Routes in New Hampshire

Routes recording Winter Wren in New Hampshire.
Clarksville1620241966
Jeffers Ntch1320241993
Dixville Notch 21320242018
Dixvil Notch1120171966
Jefferson Hl820241966
Franconia820241966
Milan520231966
Glen520241975
Wilmot420241966
Fitzwilliam320241972
Stratford320241966
Brentwood219951971
Hopkinton220231967
Epsom220231985
Gilmantn I W220241971
Mt Chocorua220241968
Walpole220241971
Marlow220241968
Peterborough120231974
Dover119941974
Concord120231969
Strafford120191967
Canterbury120241967
Lempster120241972
Crawford Not119751966

Winter Wren Population Trend in Other States

connecticutmainemarylandmassachusettsmichiganminnesotanew-jerseynew-yorknorth-carolinaohiopennsylvaniatennesseevermontvirginiawest-virginiawisconsin

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