Wisconsin · Year-round resident

Northern Saw-whet Owls in Wisconsin

When saw-whet owls are present in Wisconsin, when they nest, which native Wisconsin plants feed them, and how to host them in a USDA 3b–6a yard.

Owls (Strigidae)Northern Saw-whet OwlAegolius acadicus

Status in Wisconsin: Year-round resident
Nesting window: April–June
Broods: 1–2 per season
Hardiness zones: USDA 3b–6a
Nest box: 2 1/2 in hole, 6 × 6 in floor, 10–20 ft

When to expect saw-whet owls in Wisconsin

Northern Saw-whet Owls live in Wisconsin all year. Cold, snowy winters; boreal finches visit the north. That makes the cold months the time your yard matters most to them.

Humid continental, with two Great Lakes shorelines, northern forest and southern prairie-oak savanna.

Nesting in Wisconsin

Across Wisconsin, saw-whet owls typically nest from April–June. Plan around that window: March for setup, June for clean-out.

Warm, humid summers.

Have boxes cleaned and mounted before March — saw-whet owls begin prospecting ahead of egg-laying.
Use a 2 1/2 in entrance on a 6 × 6 in floor, mounted 10–20 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 June.

Native Wisconsin plants that attract saw-whet owls

Of the regional native plants we track for Wisconsin, these 8 provide food or cover saw-whet owls use:

Eastern red cedar

Juniperus virginiana · Tree

Dense evergreen roost cover and bluish 'berries' eaten through winter.

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.

Bur oak

Quercus macrocarpa · Tree

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

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.

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 saw-whet owls through the Wisconsin year

Top foods: None — a saw-whet box in dense conifers is the draw.
In Wisconsin's winter: Cold, snowy winters; boreal finches visit the north.

Full diet breakdown for saw-whet owls · Best feeder for saw-whet owls

Frequently asked

Are saw-whet owls in Wisconsin year-round?

Yes. Northern Saw-whet Owls are year-round residents in Wisconsin.

When do saw-whet owls nest in Wisconsin?

Nesting in Wisconsin typically runs April–June, with 1–2 per season. Clutches are 4–7 eggs, incubated for 27–29 days.

What native plants attract saw-whet owls in Wisconsin?

Eastern red cedar, Serviceberry, White oak, Bur oak, Black cherry, American elderberry, Spicebush, New England aster are native plants in Wisconsin that provide food or cover for saw-whet owls.

What size birdhouse hole do saw-whet owls need?

2 1/2 in, with a floor of 6 × 6 in mounted 10–20 ft.

Other backyard birds in Wisconsin

Northern Cardinal Eastern Bluebird Black-capped 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 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 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 Canada Jay Eurasian Collared-Dove 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 Hooded Merganser Yellow Warbler Common Yellowthroat American Redstart Black-and-white Warbler Prothonotary Warbler Ovenbird Yellow-breasted Chat Palm Warbler 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 Black-backed Woodpecker Savannah Sparrow Swamp Sparrow Vesper Sparrow Snow Bunting Lapland Longspur Horned Lark Dickcissel Common Redpoll Hoary Redpoll White-winged Crossbill Bohemian Waxwing Yellow-billed Cuckoo 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.