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

Magnolia Warbler In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Magnolia Warbler in Boreal Hardwood Transition has surged: up 603% on the route-weighted index since 1968.

+603%Since 1968
103Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Magnolia Warbler has surged in Boreal Hardwood Transition: up 603% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Magnolia Warbler in Boreal Hardwood Transition is projected to rise about 65% by 2029 — from 1.9 in 2024 to a central estimate of 3.1 (95% range 2.3–3.9). A 5-year backtest shows a typical error of ±19.7%, with 80% of held-out values landing inside the 95% band.

+65%Change by 2029
3.1Projected 2029 index
2.3–3.995% range
±19.7%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
20252.92.13.8
20263.02.23.8
20273.02.23.8
20283.12.23.9
20293.12.33.9

Routes In Boreal Hardwood Transition

Routes recording Magnolia Warbler in Boreal Hardwood Transition.
Sawbill LndgMINNESOTA252024
JordanMINNESOTA252023
Hart LakeMINNESOTA162024
Sawbill CampMINNESOTA132024
LockportMINNESOTA102024
Land O' Lakes 2WISCONSIN102024
IshpemingMICHIGAN82023
Land O LakesWISCONSIN82016
HermanMICHIGAN72022
HovlandMINNESOTA72024
Eagle RiverWISCONSIN72024
Gibbs CityMICHIGAN62024
EnsignMICHIGAN52010
Sherry LakeMINNESOTA52022
Crane LakeMINNESOTA52024
OntonagonMICHIGAN42019
Betchler LksMICHIGAN42024
CohassetMINNESOTA42018
BootjackMICHIGAN32023
Ned LakeMICHIGAN32024
Pine RiverMICHIGAN32018
ChisholmMINNESOTA32024
IrmaWISCONSIN32023
HollisterWISCONSIN32016
RhinelanderWISCONSIN32023

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