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

Purple Martin In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastAerial insectivores

Purple Martin in New England / Mid-Atlantic Coast has surged: up 94% on the route-weighted index since 1968.

+94%Since 1968
130Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Purple Martin has surged in New England / Mid-Atlantic Coast: up 94% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Purple Martin in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 13 (95% range 10.0–15). A 5-year backtest shows a typical error of ±19.3%, with 80% of held-out values landing inside the 95% band.

+3%Change by 2029
13Projected 2029 index
10.0–1595% range
±19.3%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
2025129.415
2026129.615
2027129.715
2028129.815
20291310.015

Routes In New England / Mid-Atlantic Coast

Routes recording Purple Martin in New England / Mid-Atlantic Coast.
HarringtonDELAWARE1182024
CokesburyMARYLAND1022024
BlackbirdDELAWARE912024
FredericaDELAWARE882014
MadisonMARYLAND722024
HarmonyMARYLAND682017
Milton 2DELAWARE592017
HongaMARYLAND592024
MatthewsMARYLAND562024
Pedricktown 2NEW-JERSEY482024
GeorgetownDELAWARE462022
PepperboxDELAWARE362016
Woodbury HgtNEW-JERSEY362024
MillsboroDELAWARE332024
IndiantownMARYLAND322014
Cape May ChNEW-JERSEY322013
Forest GroveMARYLAND302023
FrankfordDELAWARE262012
MiltonDELAWARE262016
Holleyville 2DELAWARE262024
Broomes IslMARYLAND251996
NewarkMARYLAND252024
MarionMASSACHUSETTS252024
Bethany BchDELAWARE241990
MelitotaMARYLAND242024

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