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

Marbled Godwit In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionShorebirds

Marbled Godwit in Boreal Hardwood Transition has surged: up 108% on the route-weighted index since 1994.

+108%Since 1994
4Routes In Region
31Years

Notable Signals

long arc increasecomputed index

Marbled Godwit has surged in Boreal Hardwood Transition: up 108% on the route-weighted index since 1994.

Forecast

If the recent trend holds, Marbled Godwit in Boreal Hardwood Transition is projected to fall about 25% by 2029 — from 0.28 in 2024 to a central estimate of 0.21 (95% range 0.03–0.39). A 5-year backtest shows a typical error of ±32.1%, with 100% of held-out values landing inside the 95% band.

-25%Change by 2029
0.21Projected 2029 index
0.03–0.3995% range
±32.1%Backtest error
19892029
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
20250.200.030.38
20260.200.030.38
20270.210.030.38
20280.210.030.39
20290.210.030.39

Routes In Boreal Hardwood Transition

Routes recording Marbled Godwit in Boreal Hardwood Transition.
GreenbushMINNESOTA132024
WarroadMINNESOTA82024
LudeMINNESOTA52023
WaskishMINNESOTA11989

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