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

Bobolink In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGrassland birds

Bobolink in Boreal Hardwood Transition has declined: down 48% on the route-weighted index since 1968.

-48%Since 1968
99Routes In Region
58Years

Notable Signals

No notable trend signals for Bobolink in Boreal Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Bobolink in Boreal Hardwood Transition is projected to fall about 19% by 2029 — from 4.0 in 2024 to a central estimate of 3.2 (95% range 0.00–6.9). A 5-year backtest shows a typical error of ±30%, with 100% of held-out values landing inside the 95% band.

-19%Change by 2029
3.2Projected 2029 index
0.00–6.995% range
±30%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
20253.80.107.4
20263.60.007.3
20273.50.007.2
20283.40.007.0
20293.20.006.9

Routes In Boreal Hardwood Transition

Routes recording Bobolink in Boreal Hardwood Transition.
PickfordMICHIGAN602024
GreenbushMINNESOTA372024
FloodwoodMINNESOTA322024
BagleyMINNESOTA202006
Iron RiverWISCONSIN172024
Amnicon FallsWISCONSIN172024
Weirgor SpringsWISCONSIN172024
OntonagonMICHIGAN162019
Lake CityMICHIGAN152015
Nett LakeMINNESOTA132024
Pleasant ValMICHIGAN121997
Hubbard LakeMICHIGAN121996
CunardMICHIGAN112021
CathroMICHIGAN112016
BayfieldWISCONSIN112024
HerronMICHIGAN102016
LudeMINNESOTA102023
WarroadMINNESOTA102024
GilmanWISCONSIN102024
RiggsvilleMICHIGAN82019
DebsMINNESOTA82024
BackusMINNESOTA72024
McgregorMINNESOTA72024
Skegemog PtMICHIGAN62014
FredericMICHIGAN62003

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