BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Bobolink In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionGrassland birds

Bobolink in Prairie Hardwood Transition has collapsed: down 84% on the route-weighted index since 1968.

-84%Since 1968
155Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Bobolink has collapsed in Prairie Hardwood Transition: down 84% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Bobolink in Prairie Hardwood Transition is projected to fall about 100% by 2029 — from 1.9 in 2024 to a central estimate of 0.00 (95% range 0.00–4.4). A 5-year backtest shows a typical error of ±43.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–4.495% range
±43.9%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
20251.10.005.5
20260.800.005.2
20270.520.004.9
20280.240.004.6
20290.000.004.4

Routes In Prairie Hardwood Transition

Routes recording Bobolink in Prairie Hardwood Transition.
HolwayWISCONSIN531989
Wis RapidsWISCONSIN252023
OmroWISCONSIN232001
GuilfordILLINOIS172023
HungerfordMICHIGAN152024
Lake GalenaILLINOIS122021
OlaMICHIGAN122024
BismarkOHIO121995
Big RapidsMICHIGAN111990
Buena VistaWISCONSIN112024
TyreMICHIGAN101996
WeyerhauserWISCONSIN102024
KielWISCONSIN102022
PettysvilleMICHIGAN91979
Chatfield 2MINNESOTA92024
HudsonWISCONSIN92024
Stevens PtWISCONSIN92023
ColbyWISCONSIN92024
Drayton PlnsMICHIGAN81987
Allegan WmaMICHIGAN82019
Whitewater 2MINNESOTA82019
GraytownOHIO81984
LakevilleINDIANA72003
Packertown 2INDIANA72024
Maple RapidsMICHIGAN72019

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