BirdAnalyst
Species · BCR 28 · BBS 2025 Release · 1966–2024

Black-throated Green Warbler In Appalachian Mountains

All regionsAppalachian MountainsForest birds

Black-throated Green Warbler in Appalachian Mountains has surged: up 490% on the route-weighted index since 1968.

+490%Since 1968
281Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Black-throated Green Warbler has surged in Appalachian Mountains: up 490% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Black-throated Green Warbler in Appalachian Mountains is projected to rise about 29% by 2029 — from 3.4 in 2024 to a central estimate of 4.4 (95% range 3.1–5.7). A 5-year backtest shows a typical error of ±35%, with 60% of held-out values landing inside the 95% band.

+29%Change by 2029
4.4Projected 2029 index
3.1–5.795% range
±35%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
20254.12.95.4
20264.22.95.5
20274.33.05.5
20284.33.15.6
20294.43.15.7

Routes In Appalachian Mountains

Routes recording Black-throated Green Warbler in Appalachian Mountains.
Borden Springs 2ALABAMA302024
MeccaTENNESSEE292023
BemisWEST-VIRGINIA292024
FontanaNORTH-CAROLINA282024
Glade Run 2WEST-VIRGINIA282024
FinzelMARYLAND272024
Newfound GapTENNESSEE272024
WymerWEST-VIRGINIA272015
Table RockNORTH-CAROLINA242022
LynchPENNSYLVANIA242024
McfarlandTENNESSEE221993
HighlandsNORTH-CAROLINA212024
HarbuckTENNESSEE202023
DuboistownPENNSYLVANIA192024
Tussey Mtn.PENNSYLVANIA192024
OdinPENNSYLVANIA182024
St CollegePENNSYLVANIA182024
Cumberlnd GpKENTUCKY172018
RoulettePENNSYLVANIA172021
MunsonPENNSYLVANIA172024
Glade RunWEST-VIRGINIA172002
RidgwayPENNSYLVANIA162018
EllentonPENNSYLVANIA162024
Russell CityPENNSYLVANIA152024
Roulette 2PENNSYLVANIA152024

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