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

Canada Warbler In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Canada Warbler in Boreal Hardwood Transition has surged: up 94% on the route-weighted index since 1968.

+94%Since 1968
101Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Canada Warbler has surged in Boreal Hardwood Transition: up 94% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Canada Warbler in Boreal Hardwood Transition is projected to stay roughly flat through 2029, near 1.1 (95% range 0.65–1.5). A 5-year backtest shows a typical error of ±24.7%, with 60% of held-out values landing inside the 95% band.

+4%Change by 2029
1.1Projected 2029 index
0.65–1.595% range
±24.7%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
20251.10.641.5
20261.10.641.5
20271.10.641.5
20281.10.651.5
20291.10.651.5

Routes In Boreal Hardwood Transition

Routes recording Canada Warbler in Boreal Hardwood Transition.
LockportMINNESOTA172024
Hart LakeMINNESOTA122024
Sawbill LndgMINNESOTA102024
JordanMINNESOTA92023
Crane LakeMINNESOTA62024
EnsignMICHIGAN52010
BlackduckMINNESOTA52022
MellenWISCONSIN52024
Red LakeMINNESOTA42012
ChisholmMINNESOTA42024
Walloon LakeMICHIGAN32004
CromwellMINNESOTA32024
BemidjiMINNESOTA31979
Sawbill CampMINNESOTA32024
Cass LakeMINNESOTA32016
HermanMICHIGAN22022
Maple GroveMICHIGAN21980
MuskallongeMICHIGAN22024
GilchristMICHIGAN22021
Lake CityMICHIGAN21985
FredericMICHIGAN21991
Red OakMICHIGAN22012
Hiawatha NfMICHIGAN22017
Scott'S MarshMICHIGAN22009
Sherry LakeMINNESOTA22022

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