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

Barn Swallow In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastAerial insectivores

Barn Swallow in New England / Mid-Atlantic Coast has declined: down 35% on the route-weighted index since 1968.

-35%Since 1968
163Routes In Region
58Years

Notable Signals

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

Forecast

If the recent trend holds, Barn Swallow in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 11 (95% range 7.6–14). A 5-year backtest shows a typical error of ±8.1%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
11Projected 2029 index
7.6–1495% range
±8.1%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
2025117.915
2026117.815
2027117.714
2028117.614
2029117.614

Routes In New England / Mid-Atlantic Coast

Routes recording Barn Swallow in New England / Mid-Atlantic Coast.
HarmonyMARYLAND982017
CokesburyMARYLAND852024
HarringtonDELAWARE622024
Snow HillMARYLAND491976
MysticCONNECTICUT452023
Bethany BchDELAWARE441990
BlackbirdDELAWARE442024
FredericaDELAWARE432014
DoverDELAWARE381987
FrankfordDELAWARE372012
ClarksvilleNEW-JERSEY371991
MardelaMARYLAND352019
DeepwaterNEW-JERSEY351977
SinepuxentMARYLAND331978
MillsboroDELAWARE322024
Ocean CityNEW-JERSEY322024
QuinbyVIRGINIA322024
WestbrookCONNECTICUT312024
Holleyville 2DELAWARE312024
UncasvilleCONNECTICUT302024
HolleyvilleDELAWARE272004
MiltonDELAWARE262016
Pedricktown 2NEW-JERSEY262024
KeyportNEW-JERSEY252022
Cape May ChNEW-JERSEY242013

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