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

Northern Mockingbird In Atlantic Northern Forest

All regionsAtlantic Northern ForestGeneralists

Northern Mockingbird in Atlantic Northern Forest has surged: up 117% on the route-weighted index since 1971.

+117%Since 1971
89Routes In Region
55Years

Notable Signals

long arc increasecomputed index

Northern Mockingbird has surged in Atlantic Northern Forest: up 117% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Northern Mockingbird in Atlantic Northern Forest is projected to fall about 37% by 2029 — from 0.14 in 2024 to a central estimate of 0.09 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±56.6%, with 100% of held-out values landing inside the 95% band.

-37%Change by 2029
0.09Projected 2029 index
0.00–0.4295% range
±56.6%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
20250.110.000.44
20260.110.000.43
20270.100.000.43
20280.100.000.42
20290.090.000.42

Routes In Atlantic Northern Forest

Routes recording Northern Mockingbird in Atlantic Northern Forest.
MarlowNEW-HAMPSHIRE102007
New HartfordCONNECTICUT91987
TurnerMAINE62002
PittsfieldMASSACHUSETTS61992
BiddefordMAINE52018
CheshireMASSACHUSETTS51994
ConcordNEW-HAMPSHIRE52024
ClarksvilleNEW-HAMPSHIRE42001
Otisfield GrMAINE32008
Bowdoin CtrMAINE31993
Forest StaMAINE31984
GlenNEW-HAMPSHIRE32008
WestbrookMAINE22017
DebloisMAINE21991
CambridgeMAINE21997
CornvilleMAINE22024
ChesterfieldMASSACHUSETTS22006
PeterboroughNEW-HAMPSHIRE22024
Gilmantn I WNEW-HAMPSHIRE22010
S ReadingVERMONT22003
Post MillsVERMONT22001
East HavenVERMONT21988
New HartfordCONNECTICUT12006
BethelMAINE11999
GreenwoodMAINE11976

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