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

Pine Warbler In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Pine Warbler in Boreal Hardwood Transition has surged: up 13× on the route-weighted index since 1968.

13×Since 1968
118Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Pine Warbler has surged in Boreal Hardwood Transition: up 13× on the route-weighted index since 1968.

Forecast

If the recent trend holds, Pine Warbler in Boreal Hardwood Transition is projected to rise about 19% by 2029 — from 4.3 in 2024 to a central estimate of 5.1 (95% range 4.2–6.0). A 5-year backtest shows a typical error of ±13.4%, with 80% of held-out values landing inside the 95% band.

+19%Change by 2029
5.1Projected 2029 index
4.2–6.095% range
±13.4%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
20254.83.95.7
20264.94.05.8
20275.04.15.9
20285.14.26.0
20295.14.26.0

Routes In Boreal Hardwood Transition

Routes recording Pine Warbler in Boreal Hardwood Transition.
Land O LakesWISCONSIN242016
WausaukeeWISCONSIN242024
BlackduckMINNESOTA232022
ConoverWISCONSIN212024
Eagle RiverWISCONSIN182024
Betchler LksMICHIGAN162024
Gibbs CityMICHIGAN142024
AmbergWISCONSIN142024
Grand ViewWISCONSIN132024
McnaughtonWISCONSIN132024
Land O' Lakes 2WISCONSIN132024
MuskallongeMICHIGAN122024
Red OakMICHIGAN122022
Cluster LakesMICHIGAN122010
Imp LakeMICHIGAN112019
Big Island LakeMICHIGAN112010
GooseneckMICHIGAN102010
Union TwpWISCONSIN102024
Seney NwrMICHIGAN92024
ShanagoldenWISCONSIN92024
IrmaWISCONSIN92024
TahquamenonMICHIGAN82024
IronsMICHIGAN81989
BayfieldWISCONSIN82024
RhinelanderWISCONSIN82023

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