Connecticut · Year-round resident

Hooded Mergansers in Connecticut

When hooded mergansers are present in Connecticut, when they nest, which native Connecticut plants feed them, and how to host them in a USDA 5b–7b yard.

Ducks and geese (Anatidae)Hooded MerganserLophodytes cucullatus

Status in Connecticut: Year-round resident
Nesting window: February–May
Broods: 1 per season
Hardiness zones: USDA 5b–7b
Nest box: 4 × 3 in oval hole, 10 × 18 in floor, 6–20 ft

When to expect hooded mergansers in Connecticut

Hooded Mergansers live in Connecticut all year. Snowy winters with regular nor'easters; feeders carry chickadees, titmice and juncos through January and February. That makes the cold months the time your yard matters most to them.

Humid continental with maritime moderation along Long Island Sound.

Nesting in Connecticut

Across Connecticut, hooded mergansers typically nest from February–May. Plan around that window: January for setup, May for clean-out.

Warm, humid summers; peak nesting runs May through July.

Have boxes cleaned and mounted before January — 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 Connecticut plants that attract hooded mergansers

Of the regional native plants we track for Connecticut, these 8 provide food or cover hooded mergansers use:

Flowering dogwood

Cornus florida · Tree

Fat-rich red fall fruit taken by thrushes, bluebirds and woodpeckers.

Serviceberry

Amelanchier arborea · Tree

Early-summer berries arrive exactly when nestlings are being fed.

White oak

Quercus alba · Tree

Acorns plus hundreds of caterpillar species for nestling food.

Black cherry

Prunus serotina · Tree

Summer fruit and one of the top caterpillar host trees.

American elderberry

Sambucus canadensis · Shrub

Late-summer berry clusters taken by over 40 bird species.

Arrowwood viburnum

Viburnum dentatum · Shrub

Blue-black fall fruit and dense nesting cover.

Spicebush

Lindera benzoin · Shrub

Lipid-rich red fruit fuels fall migrants.

New England aster

Symphyotrichum novae-angliae · Perennial

Late nectar for insects and fall seed for sparrows.

Feeding hooded mergansers through the Connecticut year

Top foods: None — needs fish-bearing water.
In Connecticut's winter: Snowy winters with regular nor'easters; feeders carry chickadees, titmice and juncos through January and February.

Full diet breakdown for hooded mergansers · Best feeder for hooded mergansers

Frequently asked

Are hooded mergansers in Connecticut year-round?

Yes. Hooded Mergansers are year-round residents in Connecticut.

When do hooded mergansers nest in Connecticut?

Nesting in Connecticut typically runs February–May, with 1 per season. Clutches are 6–18 eggs, incubated for 26–41 days.

What native plants attract hooded mergansers in Connecticut?

Flowering dogwood, Serviceberry, White oak, Black cherry, American elderberry, Arrowwood viburnum, Spicebush, New England aster are native plants in Connecticut 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.

Other backyard birds in Connecticut

Northern Cardinal Eastern Bluebird Black-capped Chickadee Purple Martin Downy Woodpecker Hairy Woodpecker American Goldfinch Tufted Titmouse White-breasted Nuthatch House Wren House Finch Purple Finch Ruby-throated Hummingbird Carolina Wren Mourning Dove American Robin Dark-eyed Junco White-throated Sparrow Song Sparrow Chipping Sparrow Red-bellied Woodpecker Northern Flicker Pileated Woodpecker Yellow-bellied Sapsucker Red-breasted Nuthatch Brown Creeper Common Grackle Red-winged Blackbird Baltimore Oriole Rose-breasted Grosbeak Evening Grosbeak Pine Siskin Indigo Bunting Eastern Towhee Gray Catbird Northern Mockingbird Brown Thrasher Cedar Waxwing Tree Swallow Barn Swallow Eastern Phoebe Chimney Swift Yellow-rumped Warbler Pine Warbler Eastern Screech-Owl Wood Thrush Great Crested Flycatcher Eastern Kingbird American Tree Sparrow House Sparrow European Starling Fox Sparrow American Crow Cooper's Hawk Sharp-shinned Hawk Red-tailed Hawk Barred Owl Great Horned Owl American Kestrel Wood Duck Wild Turkey Mallard Great Blue Heron Belted Kingfisher Scarlet Tanager Eastern Meadowlark Brown-headed Cowbird Golden-crowned Kinglet Hermit Thrush Winter Wren Pine Grosbeak Red Crossbill Field Sparrow Gray Catbird Lark Sparrow Yellow Warbler Common Yellowthroat American Redstart Black-and-white Warbler Ovenbird Yellow-breasted Chat Red-eyed Vireo Warbling Vireo Eastern Wood-Pewee Least Flycatcher Cliff Swallow Northern Rough-winged Swallow Bank Swallow Common Nighthawk Eastern Whip-poor-will Canada Goose American Coot Killdeer Spotted Sandpiper American Woodcock Green Heron Great Egret Black-crowned Night Heron Turkey Vulture Osprey Bald Eagle Red-shouldered Hawk Merlin Peregrine Falcon Northern Saw-whet Owl Black-backed Woodpecker Savannah Sparrow Swamp Sparrow Vesper Sparrow Snow Bunting Horned Lark Hoary Redpoll White-winged Crossbill Bohemian Waxwing Yellow-billed Cuckoo Bobolink Rock Pigeon Monk Parakeet

Sources

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.