Oregon · Year-round resident

Hooded Mergansers in Oregon

When hooded mergansers are present in Oregon, when they nest, which native Oregon plants feed them, and how to host them in a USDA 4b–9b yard.

Ducks and geese (Anatidae)Hooded MerganserLophodytes cucullatus

Status in Oregon: Year-round resident
Nesting window: February–May
Broods: 1 per season
Hardiness zones: USDA 4b–9b
Nest box: 4 × 3 in oval hole, 10 × 18 in floor, 6–20 ft

When to expect hooded mergansers in Oregon

Hooded Mergansers live in Oregon all year. Mild, rainy winters in the Willamette Valley; cold, snowy winters east of the Cascades. That makes the cold months the time your yard matters most to them.

Marine west-coast climate west of the Cascades; high desert to the east.

Nesting in Oregon

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

Dry summers west of the Cascades; hot days in the high desert.

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 Oregon plants that attract hooded mergansers

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

Tall goldenrod

Solidago altissima · Perennial

Insect-rich in fall and seed in winter.

Paper birch

Betula papyrifera · Tree

Catkin seed feeds redpolls and siskins all winter.

Chokecherry

Prunus virginiana · Shrub

Dark summer fruit and heavy caterpillar load.

Ponderosa pine

Pinus ponderosa · Tree

Seeds and bark insects; pygmy nuthatch and woodpecker habitat.

Rabbitbrush

Ericameria nauseosa · Shrub

Late-season bloom supports insects; seed for sparrows.

Oregon white oak

Quercus garryana · Tree

Acorns and a rich insect community in the Pacific Northwest.

Douglas fir

Pseudotsuga menziesii · Tree

Seed for crossbills, siskins and chickadees.

Willow (Bebb)

Salix bebbiana · Shrub

Early catkins draw insects for arriving warblers and hummingbirds.

Feeding hooded mergansers through the Oregon year

Top foods: None — needs fish-bearing water.
In Oregon's winter: Mild, rainy winters in the Willamette Valley; cold, snowy winters east of the Cascades.

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

Frequently asked

Are hooded mergansers in Oregon year-round?

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

When do hooded mergansers nest in Oregon?

Nesting in Oregon 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 Oregon?

Tall goldenrod, Paper birch, Chokecherry, Ponderosa pine, Rabbitbrush, Oregon white oak, Douglas fir, Willow (Bebb) are native plants in Oregon 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 Oregon

Black-capped Chickadee Purple Martin Downy Woodpecker Hairy Woodpecker American Goldfinch White-breasted Nuthatch House Wren House Finch Purple Finch Mourning Dove American Robin Dark-eyed Junco Song Sparrow Chipping Sparrow Northern Flicker Pileated Woodpecker Red-breasted Nuthatch Brown Creeper Red-winged Blackbird Evening Grosbeak Pine Siskin Gray Catbird Cedar Waxwing Tree Swallow Barn Swallow Yellow-rumped Warbler Eastern Kingbird American Tree Sparrow House Sparrow European Starling Steller's Jay Woodhouse's Scrub-Jay Black-billed Magpie Canada Jay Mountain Chickadee Chestnut-backed Chickadee Bushtit Oak Titmouse Juniper Titmouse Pygmy Nuthatch Anna's Hummingbird Black-chinned Hummingbird Rufous Hummingbird Lesser Goldfinch Cassin's Finch California Towhee Spotted Towhee California Quail Western Bluebird Mountain Bluebird Say's Phoebe Black Phoebe Bewick's Wren White-crowned Sparrow Golden-crowned Sparrow Fox Sparrow Varied Thrush Violet-green Swallow Black-headed Grosbeak Lazuli Bunting Bullock's Oriole Eurasian Collared-Dove American Crow Common Raven Cooper's Hawk Sharp-shinned Hawk Red-tailed Hawk Great Horned Owl American Kestrel Wood Duck Wild Turkey Mallard Great Blue Heron Belted Kingfisher Brown-headed Cowbird Ruby-crowned Kinglet Golden-crowned Kinglet Hermit Thrush Winter Wren Pine Grosbeak Red Crossbill Gray Catbird Western Tanager Lark Sparrow Green-tailed Towhee Clark's Nutcracker Western Screech-Owl Band-tailed Pigeon Yellow Warbler Common Yellowthroat Yellow-breasted Chat Orange-crowned Warbler Warbling Vireo Western Kingbird Ash-throated Flycatcher Cliff Swallow Northern Rough-winged Swallow Bank Swallow Common Nighthawk Canada Goose American Coot Killdeer Spotted Sandpiper Green Heron Great Egret Black-crowned Night Heron Turkey Vulture Osprey Bald Eagle Merlin Peregrine Falcon Northern Saw-whet Owl Barn Owl Lewis's Woodpecker Black-backed Woodpecker White-headed Woodpecker Savannah Sparrow Vesper Sparrow Snow Bunting Lapland Longspur Horned Lark Bohemian Waxwing Bobolink Yellow-headed Blackbird Brewer's Blackbird 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.