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

Common Loon In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastWetland birds

Common Loon in New England / Mid-Atlantic Coast has surged: up 188% on the route-weighted index since 1973.

+188%Since 1973
8Routes In Region
43Years

Notable Signals

long arc increasecomputed index

Common Loon has surged in New England / Mid-Atlantic Coast: up 188% on the route-weighted index since 1973.

Forecast

If the recent trend holds, Common Loon in New England / Mid-Atlantic Coast is projected to fall about 61% by 2029 — from 0.16 in 2024 to a central estimate of 0.06 (95% range 0.01–0.11). A 5-year backtest shows a typical error of ±105%, with 60% of held-out values landing inside the 95% band.

-61%Change by 2029
0.06Projected 2029 index
0.01–0.1195% range
±105%Backtest error
19692029
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
20250.060.010.11
20260.060.010.11
20270.060.010.11
20280.060.010.11
20290.060.010.11

Routes In New England / Mid-Atlantic Coast

Routes recording Common Loon in New England / Mid-Atlantic Coast.
Kittery PtMAINE72024
StraffordNEW-HAMPSHIRE32024
MarionMASSACHUSETTS22024
LittletonMASSACHUSETTS11991
HoldenMASSACHUSETTS12012
BrentwoodNEW-HAMPSHIRE11981
DoverNEW-HAMPSHIRE12013
EpsomNEW-HAMPSHIRE12019

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