BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Mallard In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionWaterfowl

Mallard in Prairie Hardwood Transition has declined: down 41% on the route-weighted index since 1968.

-41%Since 1968
161Routes In Region
58Years

Notable Signals

No notable trend signals for Mallard in Prairie Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Mallard in Prairie Hardwood Transition is projected to rise about 29% by 2029 — from 3.7 in 2024 to a central estimate of 4.8 (95% range 0.44–9.1). A 5-year backtest shows a typical error of ±57.5%, with 100% of held-out values landing inside the 95% band.

+29%Change by 2029
4.8Projected 2029 index
0.44–9.195% range
±57.5%Backtest error
19662029
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
20255.00.659.3
20264.90.599.2
20274.90.549.2
20284.80.499.1
20294.80.449.1

Routes In Prairie Hardwood Transition

Routes recording Mallard in Prairie Hardwood Transition.
BismarkOHIO841995
LockportOHIO622024
GraytownOHIO441984
KnappMINNESOTA412024
OmroWISCONSIN342001
N BaltimoreOHIO332019
HollandWISCONSIN332024
Le CenterMINNESOTA322016
St CharlesMICHIGAN312019
GlenwoodMINNESOTA302019
GalesburgMICHIGAN212024
KnoxINDIANA182019
New LondonMINNESOTA182024
KielWISCONSIN152022
PackertownINDIANA142004
EvergreenMINNESOTA132024
Pt WashingtnWISCONSIN132024
Omro 2WISCONSIN132024
HatfieldWISCONSIN121994
PettysvilleMICHIGAN111979
UnityWISCONSIN112024
Stevens PtWISCONSIN112021
Columbia CtyINDIANA102024
Drayton PlnsMICHIGAN101987
HudsonWISCONSIN102024

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