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

Mallard In Badlands and Prairies

All regionsBadlands and PrairiesWaterfowl

Mallard in Badlands and Prairies has fallen sharply: down 52% on the route-weighted index since 1969.

-52%Since 1969
133Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Mallard has fallen sharply in Badlands and Prairies: down 52% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Mallard in Badlands and Prairies is projected to rise about 18% by 2029 — from 3.6 in 2024 to a central estimate of 4.2 (95% range 1.1–7.4). A 5-year backtest shows a typical error of ±20.8%, with 100% of held-out values landing inside the 95% band.

+18%Change by 2029
4.2Projected 2029 index
1.1–7.495% range
±20.8%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
20254.51.37.6
20264.41.27.6
20274.41.27.5
20284.31.17.5
20294.21.17.4

Routes In Badlands and Prairies

Routes recording Mallard in Badlands and Prairies.
PromiseSOUTH-DAKOTA532015
IsabelSOUTH-DAKOTA452015
Eagle ButteSOUTH-DAKOTA422015
GorhamNORTH-DAKOTA302018
St XavierMONTANA252010
Cedar CreekNORTH-DAKOTA252022
KayceeWYOMING212024
S. PioneerSOUTH-DAKOTA202023
BentleyNORTH-DAKOTA172024
WebsterMONTANA162024
SolenNORTH-DAKOTA162023
CottonwoodSOUTH-DAKOTA162024
ClarkelenWYOMING161978
LodgepoleSOUTH-DAKOTA132024
RecluseWYOMING132024
BowmanNORTH-DAKOTA122024
JordanMONTANA112024
ShawmutMONTANA112024
ChamberlainSOUTH-DAKOTA112011
VolunteerSOUTH-DAKOTA112019
WinifredMONTANA102023
PineyWYOMING101987
Reed PointMONTANA92024
Dunn CenterNORTH-DAKOTA92024
LaplantSOUTH-DAKOTA92015

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