BirdAnalyst
Species · BCR 14 · BBS 2025 Release · 1966–2024

Bank Swallow In Atlantic Northern Forest

All regionsAtlantic Northern ForestAerial insectivores

Bank Swallow in Atlantic Northern Forest has collapsed: down 94% on the route-weighted index since 1968.

-94%Since 1968
122Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Bank Swallow has collapsed in Atlantic Northern Forest: down 94% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Bank Swallow in Atlantic Northern Forest is projected to fall about 100% by 2029 — from 0.31 in 2024 to a central estimate of 0.00 (95% range 0.00–3.0). A 5-year backtest shows a typical error of ±409.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–3.095% range
±409.9%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
20250.000.003.0
20260.000.003.0
20270.000.003.0
20280.000.003.0
20290.000.003.0

Routes In Atlantic Northern Forest

Routes recording Bank Swallow in Atlantic Northern Forest.
East TroyMAINE391996
TopsfieldMAINE391978
CheshireMASSACHUSETTS371993
EastbrookMAINE311996
WarrenMAINE211990
HardwickVERMONT202016
WatervilleVERMONT181980
BentonMAINE161979
WarrensburgNEW-YORK151978
HartfordMAINE122024
Forest StaMAINE121985
NorthfieldMAINE91981
WashburnMAINE91979
BethelMAINE82019
CambridgeMAINE82008
WanakenaNEW-YORK81994
WestbrookMAINE71993
WytopitlockMAINE71997
FreedomMAINE61996
St DavidMAINE61996
KasoagNEW-YORK62005
HighmarketNEW-YORK62002
St JohnsburyVERMONT62024
East HavenVERMONT61999
Otisfield GrMAINE52010

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