Mallards in Illinois
When mallards are present in Illinois, when they nest, which native Illinois plants feed them, and how to host them in a USDA 5a–7b yard.
- Status in Illinois
- Year-round resident
- Nesting window
- March–June
- Broods
- 1 per season
- Hardiness zones
- USDA 5a–7b
When to expect mallards in Illinois
Mallards live in Illinois all year. Cold, windy winters in the north; the southern tip is milder and hosts more wintering species. That makes the cold months the time your yard matters most to them.
Humid continental, grading from the Lake Michigan shore and prairie north to the forested Shawnee Hills in the south.
Nesting in Illinois
Across Illinois, mallards typically nest from March–June. Plan around that window: February for setup, June for clean-out.
Hot, humid summers; much of the state is farmland, so backyard native plantings matter.
- Mallards don't use nest boxes. Keep dense native shrubs and trees such as sugar maple for nest sites.
- Delay heavy pruning of shrubs until after June.
Native Illinois plants that attract mallards
Of the regional native plants we track for Illinois, these 8 provide food or cover mallards use:
Tubular flowers for hummingbirds and seed heads for finches.
Leave seed heads up through winter for goldfinches.
Prolific seed heads for finches and sparrows.
Annual native sunflower — the original feeder seed.
Late nectar for insects and fall seed for sparrows.
Native bunchgrass; winter seed and ground cover for sparrows and juncos.
Insect-rich in fall and seed in winter.
Hosts hundreds of caterpillar species; spring flowers draw early insects.
Feeding mallards through the Illinois year
- Top foods: Cracked corn, Duck pellets.
- In Illinois's winter: Cold, windy winters in the north; the southern tip is milder and hosts more wintering species.
Frequently asked
Are mallards in Illinois year-round?
Yes. Mallards are year-round residents in Illinois.
When do mallards nest in Illinois?
Nesting in Illinois typically runs March–June, with 1 per season. Clutches are 1–13 eggs, incubated for 23–30 days.
What native plants attract mallards in Illinois?
Wild bergamot, Purple coneflower, Black-eyed Susan, Common sunflower, New England aster, Little bluestem, Tall goldenrod, Sugar maple are native plants in Illinois that provide food or cover for mallards.
Mallards in other regions
Other backyard birds in Illinois
Sources
- Mallard — All About Birds, Cornell Lab of Ornithology
- Mallard life history — Cornell Lab of Ornithology
- Mallard — Audubon Guide to North American Birds
- eBird region overview and bar charts — Illinois
- USDA Plant Hardiness Zone Map (2023)
- Audubon Native Plants Database
Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.