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

Warbling Vireo In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Warbling Vireo in Boreal Hardwood Transition has fallen sharply: down 74% on the route-weighted index since 1968.

-74%Since 1968
104Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Warbling Vireo has fallen sharply in Boreal Hardwood Transition: down 74% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Warbling Vireo in Boreal Hardwood Transition is projected to fall about 55% by 2029 — from 0.48 in 2024 to a central estimate of 0.22 (95% range 0.00–0.74). A 5-year backtest shows a typical error of ±24.4%, with 100% of held-out values landing inside the 95% band.

-55%Change by 2029
0.22Projected 2029 index
0.00–0.7495% range
±24.4%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
20250.340.000.86
20260.310.000.83
20270.280.000.81
20280.250.000.78
20290.220.000.74

Routes In Boreal Hardwood Transition

Routes recording Warbling Vireo in Boreal Hardwood Transition.
GreenbushMINNESOTA122024
Pleasant ValMICHIGAN71997
CathroMICHIGAN72016
HerronMICHIGAN72016
Eagle RiverWISCONSIN72010
TahquamenonMICHIGAN62005
WausaukeeWISCONSIN62010
Bear LakeMICHIGAN52024
Hubbard LakeMICHIGAN51996
RiggsvilleMICHIGAN42019
HarriettaMICHIGAN42019
Walloon Lake 2MICHIGAN42024
MayfieldMICHIGAN42022
Cass LakeMINNESOTA41995
BashawWISCONSIN42022
Walloon LakeMICHIGAN32004
FloodwoodMINNESOTA32012
BenaMINNESOTA31967
BemidjiMINNESOTA31980
WaskishMINNESOTA31982
Tamarac NwrMINNESOTA32002
ShanagoldenWISCONSIN31986
Gibbs CityMICHIGAN22013
MuskallongeMICHIGAN21977
Lake CityMICHIGAN22022

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