Pennsylvania · Year-round resident

Hooded Mergansers in Pennsylvania

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

Ducks and geese (Anatidae)Hooded MerganserLophodytes cucullatus

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

When to expect hooded mergansers in Pennsylvania

Hooded Mergansers live in Pennsylvania all year. Snow cover makes suet and heated water valuable; both chickadee species meet in a narrow hybrid zone across the south of the state. That makes the cold months the time your yard matters most to them.

Humid continental; cold, snowy winters in the north and mountains, milder in the southeast.

Nesting in Pennsylvania

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

Warm summers; bluebirds typically raise two broods.

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 Pennsylvania plants that attract hooded mergansers

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

Black cherry

Prunus serotina · Tree

Summer fruit and a major caterpillar host.

White oak

Quercus alba · Tree

Acorns and insects.

New England aster

Symphyotrichum novae-angliae · Perennial

Fall seed.

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.

Bur oak

Quercus macrocarpa · Tree

Drought-hardy prairie oak with large acorns and a heavy insect load.

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.

Feeding hooded mergansers through the Pennsylvania year

Top foods: None — needs fish-bearing water.
In Pennsylvania's winter: Snow cover makes suet and heated water valuable; both chickadee species meet in a narrow hybrid zone across the south of the state.

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

Frequently asked

Are hooded mergansers in Pennsylvania year-round?

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

When do hooded mergansers nest in Pennsylvania?

Nesting in Pennsylvania 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 Pennsylvania?

Black cherry, White oak, New England aster, Flowering dogwood, Serviceberry, Bur oak, American elderberry, Arrowwood viburnum are native plants in Pennsylvania 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 Pennsylvania

Northern Cardinal Eastern Bluebird Black-capped Chickadee Carolina Chickadee Purple Martin Downy Woodpecker Hairy Woodpecker American Goldfinch Tufted Titmouse White-breasted Nuthatch House Wren Blue Jay 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 Red-headed Woodpecker Yellow-bellied Sapsucker Red-breasted Nuthatch Brown Creeper Common Grackle Red-winged Blackbird Baltimore Oriole Orchard Oriole Rose-breasted Grosbeak Evening Grosbeak Pine Siskin Common Redpoll 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 Common Raven Cooper's Hawk Sharp-shinned Hawk Red-tailed Hawk Barred Owl Great Horned Owl American Kestrel Wood Duck Wild Turkey Northern Bobwhite 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 Yellow-throated Warbler Ovenbird Yellow-breasted Chat Red-eyed Vireo Warbling Vireo White-eyed 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 Black 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 Blue Grosbeak Common Redpoll Hoary Redpoll White-winged Crossbill Bohemian Waxwing Yellow-billed Cuckoo Bobolink Rock Pigeon

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.