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

Sharp-tailed Grouse In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

Sharp-tailed Grouse in Boreal Hardwood Transition has surged: up 999% on the route-weighted index since 1972.

+999%Since 1972
17Routes In Region
48Years

Notable Signals

long arc increasecomputed index

Sharp-tailed Grouse has surged in Boreal Hardwood Transition: up 998% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Sharp-tailed Grouse in Boreal Hardwood Transition is projected to fall about 52% by 2029 — from 0.52 in 2024 to a central estimate of 0.25 (95% range 0.06–0.45). A 5-year backtest shows a typical error of ±390.3%, with 60% of held-out values landing inside the 95% band.

-52%Change by 2029
0.25Projected 2029 index
0.06–0.4595% range
±390.3%Backtest error
19692029
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
20250.230.040.43
20260.240.040.43
20270.240.050.44
20280.250.050.44
20290.250.060.45

Routes In Boreal Hardwood Transition

Routes recording Sharp-tailed Grouse in Boreal Hardwood Transition.
GreenbushMINNESOTA262024
LudeMINNESOTA102023
WarroadMINNESOTA72024
PickfordMICHIGAN32024
Nett LakeMINNESOTA22024
Seney NwrMICHIGAN12009
FloodwoodMINNESOTA12017
DebsMINNESOTA11981
Little ForkMINNESOTA12023
WaskishMINNESOTA12023
McgregorMINNESOTA12015
MinongWISCONSIN12024
Union TwpWISCONSIN12000
ExelandWISCONSIN11980
GilmanWISCONSIN12005
PhillipsWISCONSIN11994
FlambeauWISCONSIN12012

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