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

Palm Warbler In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Palm Warbler in Boreal Hardwood Transition has surged: up 123% on the route-weighted index since 1969.

+123%Since 1969
48Routes In Region
55Years

Notable Signals

long arc increasecomputed index

Palm Warbler has surged in Boreal Hardwood Transition: up 123% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Palm Warbler in Boreal Hardwood Transition is projected to rise about 148% by 2029 — from 0.12 in 2024 to a central estimate of 0.30 (95% range 0.14–0.45). A 5-year backtest shows a typical error of ±87.6%, with 60% of held-out values landing inside the 95% band.

+148%Change by 2029
0.30Projected 2029 index
0.14–0.4595% range
±87.6%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
20250.280.130.43
20260.280.130.44
20270.290.140.44
20280.290.140.45
20290.300.140.45

Routes In Boreal Hardwood Transition

Routes recording Palm Warbler in Boreal Hardwood Transition.
Pine RiverMICHIGAN42016
Gibbs CityMICHIGAN32022
FloodwoodMINNESOTA32024
Crane LakeMINNESOTA32022
IshpemingMICHIGAN22023
CunardMICHIGAN22015
TahquamenonMICHIGAN21995
Hiawatha NfMICHIGAN22024
CromwellMINNESOTA22024
Mille LacsMINNESOTA21994
Sawbill LndgMINNESOTA22010
Sherry LakeMINNESOTA22022
JordanMINNESOTA22022
GreenbushMINNESOTA22016
ChisholmMINNESOTA22023
MinongWISCONSIN22005
ShanagoldenWISCONSIN21996
RhinelanderWISCONSIN22017
OntonagonMICHIGAN11975
Crystal FlsMICHIGAN12004
Brocky LakeMICHIGAN12016
ShingletonMICHIGAN12024
CreightonMICHIGAN12006
MuskallongeMICHIGAN11980
Betchler LksMICHIGAN12023

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