BirdAnalyst
Species · Utah · BBS 2025 Release · 1966–2024

Mallard Population Trend in Utah

All statesWaterfowl

Mallard in Utah has surged: up 433% on the route-weighted index since 1970.

+433%Since 1970
82Routes In State
53Years

Notable Mallard Trends in Utah

long arc increasecomputed index

Mallard has surged in Utah: up 433% on the route-weighted index since 1970.

Mallard Population Forecast in Utah

If the recent trend holds, Mallard in Utah is projected to rise about 37% by 2029 — from 3.1 in 2024 to a central estimate of 4.2 (95% range 1.9–6.6). A 5-year backtest shows a typical error of ±62.8%, with 100% of held-out values landing inside the 95% band.

+37%Change by 2029
4.2Projected 2029 index
1.9–6.695% range
±62.8%Backtest error
19682029
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
20254.01.76.3
20264.11.76.4
20274.11.86.5
20284.21.86.5
20294.21.96.6

Mallard Survey Routes in Utah

Routes recording Mallard in Utah.
Vernal9420181999
Bear River5120231992
Goshen5020241987
Alton 23520242023
Dixie Nf2220241993
Kamas2020241997
Promontory1720231970
Randolph1620241992
Cleveland1520191992
Neponset Res1420181995
Saleratus Cr1320171995
Navajo Lake1220241968
E. Bear Lake1220221995
Grizzly Rdge1020241993
Bicknell1020211997
Crawford Mts920152015
Lynn820231982
Alton820191997
Delta620171987
Ferron620222013
Wellington 3520212014
Altonah520151973
Shivwitz520212021
Heber Mtn.520232000
Hanna520191999

Mallard Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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