Hooded Mergansers in Minnesota
When hooded mergansers are present in Minnesota, when they nest, which native Minnesota plants feed them, and how to host them in a USDA 3a–5b yard.
- Status in Minnesota
- Year-round resident
- Nesting window
- March–May
- Broods
- 1 per season
- Hardiness zones
- USDA 3a–5b
- Nest box
- 4 × 3 in oval hole, 10 × 18 in floor, 6–20 ft
When to expect hooded mergansers in Minnesota
Hooded Mergansers live in Minnesota all year. Temperatures below 0°F are routine — heated water, suet and roost boxes are survival aids, not extras. That makes the cold months the time your yard matters most to them.
Continental, with very cold winters and warm summers; prairie in the west, boreal forest in the northeast.
Nesting in Minnesota
Across Minnesota, hooded mergansers typically nest from March–May. Plan around that window: February for setup, May for clean-out.
A short, intense breeding season; most nesting runs May through July.
- Have boxes cleaned and mounted before February — hooded mergansers begin prospecting ahead of egg-laying.
- Use a 4 × 3 in oval entrance on a 10 × 18 in floor, mounted 6–20 ft.
- Fit a pole baffle or hole guard; ventilation gaps and drainage holes are essential.
- Clean out old nests after each brood and again after May.
Native Minnesota plants that attract hooded mergansers
Of the regional native plants we track for Minnesota, these 8 provide food or cover hooded mergansers use:
Acorns and bark insects.
Early-summer berries arrive exactly when nestlings are being fed.
Acorns plus hundreds of caterpillar species for nestling food.
Summer fruit and one of the top caterpillar host trees.
Late-summer berry clusters taken by over 40 bird species.
Lipid-rich red fruit fuels fall migrants.
Late nectar for insects and fall seed for sparrows.
Insect-rich in fall and seed in winter.
Feeding hooded mergansers through the Minnesota year
- Top foods: None — needs fish-bearing water.
- In Minnesota's winter: Temperatures below 0°F are routine — heated water, suet and roost boxes are survival aids, not extras.
Full diet breakdown for hooded mergansers · Best feeder for hooded mergansers
Frequently asked
Are hooded mergansers in Minnesota year-round?
Yes. Hooded Mergansers are year-round residents in Minnesota.
When do hooded mergansers nest in Minnesota?
Nesting in Minnesota typically runs March–May, with 1 per season. Clutches are 6–18 eggs, incubated for 26–41 days.
What native plants attract hooded mergansers in Minnesota?
Bur oak, Serviceberry, White oak, Black cherry, American elderberry, Spicebush, New England aster, Tall goldenrod are native plants in Minnesota that provide food or cover for hooded mergansers.
What size birdhouse hole do hooded mergansers need?
4 × 3 in oval, with a floor of 10 × 18 in mounted 6–20 ft.
Hooded Mergansers in other regions
Other backyard birds in Minnesota
Sources
- Hooded Merganser — All About Birds, Cornell Lab of Ornithology
- Hooded Merganser life history — Cornell Lab of Ornithology
- Hooded Merganser — Audubon Guide to North American Birds
- NestWatch nest box plans and species requirements — Cornell Lab
- eBird region overview and bar charts — Minnesota
- 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.