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

Black-billed Cuckoo In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

Black-billed Cuckoo in Boreal Hardwood Transition has edged down: down 21% on the route-weighted index since 1968.

-21%Since 1968
125Routes In Region
58Years

Notable Signals

No notable trend signals for Black-billed Cuckoo in Boreal Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Black-billed Cuckoo in Boreal Hardwood Transition is projected to stay roughly flat through 2029, near 0.83 (95% range 0.00–2.5). A 5-year backtest shows a typical error of ±47.4%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
0.83Projected 2029 index
0.00–2.595% range
±47.4%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
20250.920.002.6
20260.900.002.6
20270.880.002.5
20280.860.002.5
20290.830.002.5

Routes In Boreal Hardwood Transition

Routes recording Black-billed Cuckoo in Boreal Hardwood Transition.
Iron RiverWISCONSIN222024
CreightonMICHIGAN112021
ChaffeyWISCONSIN112022
LudeMINNESOTA92023
WarroadMINNESOTA92023
MuskallongeMICHIGAN82019
CunardMICHIGAN72021
Hubbard LakeMICHIGAN71994
GilmanWISCONSIN72023
Beaver LakeMICHIGAN51994
Frederic 2MICHIGAN52015
WaskishMINNESOTA52023
BootjackMICHIGAN42023
ShingletonMICHIGAN42022
FredericMICHIGAN42003
GreenbushMINNESOTA42024
ChisholmMINNESOTA42023
Ned LakeMICHIGAN32024
Lake CityMICHIGAN32009
PickfordMICHIGAN32017
CathroMICHIGAN32011
Sand LakeMICHIGAN32022
BackusMINNESOTA32022
Pine RiverMINNESOTA32022
HovlandMINNESOTA32021

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