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

Chimney Swift In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastAerial insectivores

Chimney Swift in New England / Mid-Atlantic Coast has declined: down 40% on the route-weighted index since 1968.

-40%Since 1968
161Routes In Region
58Years

Notable Signals

No notable trend signals for Chimney Swift in New England / Mid-Atlantic Coast. See the full index history below.

Forecast

If the recent trend holds, Chimney Swift in New England / Mid-Atlantic Coast is projected to fall about 16% by 2029 — from 7.1 in 2024 to a central estimate of 6.0 (95% range 3.4–8.5). A 5-year backtest shows a typical error of ±9.2%, with 100% of held-out values landing inside the 95% band.

-16%Change by 2029
6.0Projected 2029 index
3.4–8.595% range
±9.2%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
20256.33.78.8
20266.23.68.8
20276.13.58.7
20286.03.58.6
20296.03.48.5

Routes In New England / Mid-Atlantic Coast

Routes recording Chimney Swift in New England / Mid-Atlantic Coast.
JonesMARYLAND551994
Wallum LakeRHODE-ISLAND532024
Kittery PtMAINE502024
DeepwaterNEW-JERSEY431977
LargoMARYLAND421981
HarmonyMARYLAND422017
Island CreekMARYLAND362024
Snow HillMARYLAND351976
Del HavenNEW-JERSEY311991
E PepperellMASSACHUSETTS271994
PedricktownNEW-JERSEY272012
BeltsvilleMARYLAND252012
DoverDELAWARE231987
DoverNEW-HAMPSHIRE222024
Lowes XrdsDELAWARE201991
Forest GroveMARYLAND192023
Warren 2MASSACHUSETTS192024
GreenwichNEW-JERSEY192024
PrattvilleMASSACHUSETTS182019
WarrenMASSACHUSETTS182009
Cape May ChNEW-JERSEY182013
WillimanticCONNECTICUT172018
HarringtonDELAWARE162024
Casimir Pulaski SfRHODE-ISLAND162018
E HartlandCONNECTICUT151992

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