BirdAnalyst
Species · BCR 13 · BBS 2025 Release · 1966–2024

Kentucky Warbler In Lower Great Lakes / St. Lawrence Plain

All regionsLower Great Lakes / St. Lawrence PlainForest birds

Kentucky Warbler in Lower Great Lakes / St. Lawrence Plain has declined: down 26% on the route-weighted index since 1971.

-26%Since 1971
8Routes In Region
24Years

Notable Signals

No notable trend signals for Kentucky Warbler in Lower Great Lakes / St. Lawrence Plain. See the full index history below.

Forecast

If the recent trend holds, Kentucky Warbler in Lower Great Lakes / St. Lawrence Plain is projected to stay roughly flat through 2027, near 0.03 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±50.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2027
0.03Projected 2027 index
0.00–0.0595% range
±50.8%Backtest error
19662027
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
20230.030.000.05
20240.030.000.05
20250.030.000.05
20260.030.000.05
20270.030.000.05

Routes In Lower Great Lakes / St. Lawrence Plain

Routes recording Kentucky Warbler in Lower Great Lakes / St. Lawrence Plain.
MiddlefieldOHIO11970
LattasburgOHIO11984
HebronOHIO12013
Slippery RkPENNSYLVANIA11975
CloverPENNSYLVANIA12019
Ferris CrnrsPENNSYLVANIA11971
TeeplevillePENNSYLVANIA12010
HarrisvillePENNSYLVANIA12022

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