BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

Bay-breasted Warbler In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Bay-breasted Warbler in Boreal Hardwood Transition has edged down: down 14% on the route-weighted index since 1976.

-14%Since 1976
30Routes In Region
38Years

Notable Signals

No notable trend signals for Bay-breasted Warbler in Boreal Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Bay-breasted Warbler in Boreal Hardwood Transition is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±40.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.04Projected 2029 index
0.00–0.0895% range
±40.8%Backtest error
19672029
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
20250.040.000.08
20260.040.000.08
20270.040.000.08
20280.040.000.08
20290.040.000.08

Routes In Boreal Hardwood Transition

Routes recording Bay-breasted Warbler in Boreal Hardwood Transition.
BerglandMICHIGAN32022
Seney NwrMICHIGAN32011
WaskishMINNESOTA31982
Gibbs CityMICHIGAN21994
CunardMICHIGAN22019
Walloon LakeMICHIGAN21980
CohassetMINNESOTA22012
Crane LakeMINNESOTA22024
MareniscoMICHIGAN12017
BootjackMICHIGAN11995
Ned LakeMICHIGAN12022
HermanMICHIGAN12022
Brocky LakeMICHIGAN11981
ShingletonMICHIGAN11988
CreightonMICHIGAN11980
TahquamenonMICHIGAN12013
GilchristMICHIGAN12003
PickfordMICHIGAN12024
Isabella 2MICHIGAN12018
LockportMINNESOTA12011
Sawbill LndgMINNESOTA12021
Hart LakeMINNESOTA11991
Sawbill CampMINNESOTA12021
JordanMINNESOTA12021
BabbittMINNESOTA12021

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