BirdAnalyst
Species · Connecticut · BBS 2025 Release · 1966–2024

Acadian Flycatcher Population Trend in Connecticut

All statesAerial insectivores

Acadian Flycatcher in Connecticut has surged: up 121% on the route-weighted index since 1983.

+121%Since 1983
12Routes In State
30Years

Notable Acadian Flycatcher Trends in Connecticut

long arc increasecomputed index

Acadian Flycatcher has surged in Connecticut: up 121% on the route-weighted index since 1983.

Acadian Flycatcher Population Forecast in Connecticut

If the recent trend holds, Acadian Flycatcher in Connecticut is projected to rise about 121% by 2029 — from 0.11 in 2024 to a central estimate of 0.24 (95% range 0.03–0.46). A 5-year backtest shows a typical error of ±41.5%, with 80% of held-out values landing inside the 95% band.

+121%Change by 2029
0.24Projected 2029 index
0.03–0.4695% range
±41.5%Backtest error
19702029
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
20250.230.020.45
20260.240.020.46
20270.240.020.46
20280.240.020.46
20290.240.030.46

Acadian Flycatcher Survey Routes in Connecticut

Routes recording Acadian Flycatcher in Connecticut.
Warren420082001
Woodstock219701970
Mid Haddam220232005
Mystic120021983
Buckingham120222022
Uncasville120241987
Westbrook119991985
No Woodbury120012001
Sherman120152004
Woodstock 2120162016
Danbury119771977
Long Hill120102005

Acadian Flycatcher Population Trend in Other States

alabamaarkansasdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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