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

Carolina Wren In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

Carolina Wren in Atlantic Northern Forest has surged: up 27× on the route-weighted index since 1976.

27×Since 1976
32Routes In Region
28Years

Notable Signals

long arc increasecomputed index

Carolina Wren has surged in Atlantic Northern Forest: up 27× on the route-weighted index since 1976.

Forecast

If the recent trend holds, Carolina Wren in Atlantic Northern Forest is projected to fall about 71% by 2029 — from 0.66 in 2024 to a central estimate of 0.19 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±88.4%, with 20% of held-out values landing inside the 95% band.

-71%Change by 2029
0.19Projected 2029 index
0.00–0.4295% range
±88.4%Backtest error
19742029
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
20250.170.000.41
20260.180.000.41
20270.180.000.41
20280.190.000.42
20290.190.000.42

Routes In Atlantic Northern Forest

Routes recording Carolina Wren in Atlantic Northern Forest.
New HartfordCONNECTICUT72024
MontereyMASSACHUSETTS72024
SheffieldMASSACHUSETTS52022
FitzwilliamNEW-HAMPSHIRE52024
PeterboroughNEW-HAMPSHIRE42024
ConcordNEW-HAMPSHIRE42024
N OrangeMASSACHUSETTS32024
ChesterfieldMASSACHUSETTS32024
Northfield 2MAINE22014
CanterburyNEW-HAMPSHIRE22022
W RutlandVERMONT22024
New HartfordCONNECTICUT11978
WestbrookMAINE12024
Otisfield GrMAINE12012
HartfordMAINE12014
Bowdoin CtrMAINE12013
FreedomMAINE12021
CarrabassettMAINE12017
CummingtonMASSACHUSETTS12012
Cummington 2MASSACHUSETTS12024
HopkintonNEW-HAMPSHIRE12024
Gilmantn I WNEW-HAMPSHIRE12021
WalpoleNEW-HAMPSHIRE12022
MarlowNEW-HAMPSHIRE12024
MilanNEW-HAMPSHIRE11992

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