BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Marbled Godwit In Prairie Potholes

All regionsPrairie PotholesShorebirds

Marbled Godwit in Prairie Potholes has risen sharply: up 71% on the route-weighted index since 1969.

+71%Since 1969
82Routes In Region
57Years

Notable Signals

long arc increasecomputed index

Marbled Godwit has risen sharply in Prairie Potholes: up 71% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Marbled Godwit in Prairie Potholes is projected to rise about 45% by 2029 — from 2.0 in 2024 to a central estimate of 2.9 (95% range 1.8–4.0). A 5-year backtest shows a typical error of ±27.4%, with 100% of held-out values landing inside the 95% band.

+45%Change by 2029
2.9Projected 2029 index
1.8–4.095% range
±27.4%Backtest error
19672029
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
20252.81.73.9
20262.81.73.9
20272.91.84.0
20282.91.84.0
20292.91.84.0

Routes In Prairie Potholes

Routes recording Marbled Godwit in Prairie Potholes.
GryglaMINNESOTA152016
MaltaMONTANA132024
VirgelleMONTANA112024
GormanSOUTH-DAKOTA112010
DenbighNORTH-DAKOTA102024
Danzig 2NORTH-DAKOTA102024
Ester LakeMONTANA82024
WalcottNORTH-DAKOTA82015
SacoMONTANA72024
WestbyMONTANA72024
Wild RoseNORTH-DAKOTA72024
Douglas CrkNORTH-DAKOTA72024
White LakeSOUTH-DAKOTA72011
OswegoMONTANA62024
ChinookMONTANA62024
Powers LakeNORTH-DAKOTA62024
BraddockNORTH-DAKOTA62022
Lake BronsonMINNESOTA52011
Hay LakeMONTANA52017
ShelbyMONTANA52024
GildfordMONTANA52024
Horsehead LkNORTH-DAKOTA52024
RaymondSOUTH-DAKOTA52021
GettysburgSOUTH-DAKOTA52023
GlentanaMONTANA42024

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