BirdAnalyst
Species · BCR 14 · BBS 2025 Release · 1966–2024

Alder Flycatcher In Atlantic Northern Forest

All regionsAtlantic Northern ForestAerial insectivores

Alder Flycatcher in Atlantic Northern Forest has risen sharply: up 55% on the route-weighted index since 1968.

+55%Since 1968
153Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Alder Flycatcher has risen sharply in Atlantic Northern Forest: up 55% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Alder Flycatcher in Atlantic Northern Forest is projected to rise about 16% by 2029 — from 4.2 in 2024 to a central estimate of 4.8 (95% range 3.4–6.2). A 5-year backtest shows a typical error of ±14.2%, with 100% of held-out values landing inside the 95% band.

+16%Change by 2029
4.8Projected 2029 index
3.4–6.295% range
±14.2%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
20254.73.36.1
20264.73.36.1
20274.73.36.2
20284.83.46.2
20294.83.46.2

Routes In Atlantic Northern Forest

Routes recording Alder Flycatcher in Atlantic Northern Forest.
St DavidMAINE212005
HarmonyMAINE172024
BentonMAINE151980
LudlowMAINE151998
Ft FairfieldMAINE152005
St Regis FlsNEW-YORK152017
Baker LakeMAINE132009
StrattonVERMONT132024
HardwickVERMONT132024
DebloisMAINE122007
StratfordNEW-HAMPSHIRE122024
DegrasseNEW-YORK112024
StoweVERMONT112024
CooperMAINE102021
NorthfieldMAINE101981
WashburnMAINE102005
WanakenaNEW-YORK102024
LandgroveVERMONT102024
MiddlesexVERMONT102024
Newbury 2VERMONT102023
WarrenMAINE91990
Forest StaMAINE92000
Dixvil NotchNEW-HAMPSHIRE92017
HancockMAINE82024
BoundaryMAINE82016

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