BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

Gadwall In Badlands and Prairies

All regionsBadlands and PrairiesWaterfowl

Gadwall in Badlands and Prairies has surged: up 226% on the route-weighted index since 1969.

+226%Since 1969
90Routes In Region
57Years

Notable Signals

long arc increasecomputed index

Gadwall has surged in Badlands and Prairies: up 226% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Gadwall in Badlands and Prairies is projected to rise about 33% by 2029 — from 1.4 in 2024 to a central estimate of 1.8 (95% range 0.81–2.9). A 5-year backtest shows a typical error of ±32.7%, with 100% of held-out values landing inside the 95% band.

+33%Change by 2029
1.8Projected 2029 index
0.81–2.995% range
±32.7%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
20251.80.762.8
20261.80.772.9
20271.80.782.9
20281.80.792.9
20291.80.812.9

Routes In Badlands and Prairies

Routes recording Gadwall in Badlands and Prairies.
BowmanNORTH-DAKOTA232024
Dinosaurs H.M.MONTANA152021
RozetWYOMING152017
LaplantSOUTH-DAKOTA112011
CottonwoodSOUTH-DAKOTA112024
White RiverSOUTH-DAKOTA102012
BrandenbergMONTANA82007
ChamberlainSOUTH-DAKOTA82011
IsabelSOUTH-DAKOTA72015
ArdmoreSOUTH-DAKOTA72019
LacreekSOUTH-DAKOTA72023
ClarkelenWYOMING71975
BillWYOMING71999
BucknumWYOMING72024
RoundupMONTANA62024
Glen UllinNORTH-DAKOTA62022
LodgepoleSOUTH-DAKOTA62022
NatronaWYOMING61990
SussexWYOMING62024
LocateMONTANA52022
SolenNORTH-DAKOTA52024
WyarnoWYOMING52024
KayceeWYOMING52022
Two DotMONTANA42024
WinnettMONTANA42023

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