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

Alder Flycatcher Population Trend in New Hampshire

All statesAerial insectivores

Alder Flycatcher in New Hampshire has edged up: up 13% on the route-weighted index since 1968.

+13%Since 1968
26Routes In State
58Years

Notable Alder Flycatcher Trends in New Hampshire

No notable trend signals for Alder Flycatcher in New Hampshire. See the full index history below.

Alder Flycatcher Population Forecast in New Hampshire

If the recent trend holds, Alder Flycatcher in New Hampshire is projected to rise about 53% by 2029 — from 2.6 in 2024 to a central estimate of 4.0 (95% range 2.7–5.3). A 5-year backtest shows a typical error of ±20.3%, with 80% of held-out values landing inside the 95% band.

+53%Change by 2029
4.0Projected 2029 index
2.7–5.395% range
±20.3%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
20253.92.65.2
20263.92.65.2
20273.92.65.3
20284.02.65.3
20294.02.75.3

Alder Flycatcher Survey Routes in New Hampshire

Routes recording Alder Flycatcher in New Hampshire.
Stratford1220241966
Dixvil Notch920171966
Dixville Notch 2720242018
Milan620241966
Jefferson Hl420241966
Clarksville420241966
Wilmot320241967
Mt Chocorua320241970
Walpole320241966
Marlow320241966
Franconia320221966
Jeffers Ntch320241993
Hopkinton220241967
Gilmantn I W220241970
Lempster220241971
Crawford Not219731966
Peterborough120211973
Brentwood119961973
Fitzwilliam120241966
Dover120061973
Epsom120051969
Concord120241971
Strafford120191971
Canterbury120231969
Glen120241975

Alder Flycatcher Population Trend in Other States

alaskaconnecticutidahoillinoisindianaiowamainemarylandmassachusettsmichiganminnesotamontananew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-dakotavermontvirginiawashingtonwest-virginiawisconsin

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