BirdAnalyst
Species · BCR 22 · BBS 2025 Release · 1966–2024

Mallard In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieWaterfowl

Mallard in Eastern Tallgrass Prairie has surged: up 213% on the route-weighted index since 1968.

+213%Since 1968
233Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Mallard has surged in Eastern Tallgrass Prairie: up 213% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Mallard in Eastern Tallgrass Prairie is projected to rise about 88% by 2029 — from 0.84 in 2024 to a central estimate of 1.6 (95% range 0.42–2.7). A 5-year backtest shows a typical error of ±121.7%, with 60% of held-out values landing inside the 95% band.

+88%Change by 2029
1.6Projected 2029 index
0.42–2.795% range
±121.7%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
20251.60.392.7
20261.60.402.7
20271.60.412.7
20281.60.412.7
20291.60.422.7

Routes In Eastern Tallgrass Prairie

Routes recording Mallard in Eastern Tallgrass Prairie.
YorkvilleILLINOIS1202018
PutnamILLINOIS652017
New LenoxILLINOIS572019
NewportOHIO561994
SherburnvillILLINOIS172022
ItascaILLINOIS162024
MuncieINDIANA161997
GaryINDIANA151999
WelchOKLAHOMA152008
WayneILLINOIS142024
MarionOHIO142023
SenecaILLINOIS132024
HarveysburgOHIO131996
RaymondWISCONSIN132024
MinonkILLINOIS122024
MiddletownINDIANA122022
TrentonMISSOURI112021
KeithsburgILLINOIS92019
MontpelierINDIANA92019
PlainfieldINDIANA91999
ExlineIOWA92014
RichlandNEBRASKA82024
TecumsehOHIO81982
Witts StationINDIANA72005
Kahoka2MISSOURI72024

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