BirdAnalyst
Species · BCR 30 · BBS 2025 Release · 1966–2024

Least Flycatcher In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastAerial insectivores

Least Flycatcher in New England / Mid-Atlantic Coast has collapsed: down 85% on the route-weighted index since 1968.

-85%Since 1968
52Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Least Flycatcher has collapsed in New England / Mid-Atlantic Coast: down 85% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Least Flycatcher in New England / Mid-Atlantic Coast is projected to fall about 100% by 2029 — from 0.20 in 2024 to a central estimate of 0.00 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±157.3%, with 80% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.2895% range
±157.3%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
20250.000.000.28
20260.000.000.28
20270.000.000.28
20280.000.000.28
20290.000.000.28

Routes In New England / Mid-Atlantic Coast

Routes recording Least Flycatcher in New England / Mid-Atlantic Coast.
Woodstock 2CONNECTICUT102024
Ware RiverMASSACHUSETTS42022
ShermanCONNECTICUT32018
E PepperellMASSACHUSETTS31994
EpsomNEW-HAMPSHIRE32016
WarrenCONNECTICUT22011
Long HillCONNECTICUT21987
Warren 2CONNECTICUT22024
GranbyCONNECTICUT22019
PrincetonMASSACHUSETTS21976
BelchertownMASSACHUSETTS22024
S BarreMASSACHUSETTS22022
N. AndoverMASSACHUSETTS21998
AlbionNEW-JERSEY21968
MysticCONNECTICUT12021
E HartlandCONNECTICUT11992
BuckinghamCONNECTICUT12003
UncasvilleCONNECTICUT12009
WoodstockCONNECTICUT12007
WestbrookCONNECTICUT11984
WillimanticCONNECTICUT12018
No WoodburyCONNECTICUT12018
GreenwichCONNECTICUT11978
DanburyCONNECTICUT11985
Mid HaddamCONNECTICUT12007

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