Idaho · Year-round resident

Northern Saw-whet Owls in Idaho

When saw-whet owls are present in Idaho, when they nest, which native Idaho plants feed them, and how to host them in a USDA 3b–7b yard.

Owls (Strigidae)Northern Saw-whet OwlAegolius acadicus

Status in Idaho: Year-round resident
Nesting window: March–June
Broods: 1–2 per season
Hardiness zones: USDA 3b–7b
Nest box: 2 1/2 in hole, 6 × 6 in floor, 10–20 ft

When to expect saw-whet owls in Idaho

Northern Saw-whet Owls live in Idaho all year. Cold winters with inversions in the valleys; mountain finches and Bohemian Waxwings move into towns. That makes the cold months the time your yard matters most to them.

Semi-arid sagebrush plains along the Snake River and forested mountains to the north and center.

Nesting in Idaho

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

Hot, dry summers in the Snake River Plain and cool mountain summers.

Have boxes cleaned and mounted before February — 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 Idaho plants that attract saw-whet owls

Of the regional native plants we track for Idaho, these 8 provide food or cover saw-whet owls 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.

Common hackberry

Celtis occidentalis · Tree

Sweet dry fruit on the branch all winter.

Rocky Mountain juniper

Juniperus scopulorum · Tree

Berry-like cones feed bluebirds, solitaires and waxwings in winter.

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.

Douglas fir

Pseudotsuga menziesii · Tree

Seed for crossbills, siskins and chickadees.

Feeding saw-whet owls through the Idaho year

Top foods: None — a saw-whet box in dense conifers is the draw.
In Idaho's winter: Cold winters with inversions in the valleys; mountain finches and Bohemian Waxwings move into towns.

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

Frequently asked

Are saw-whet owls in Idaho year-round?

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

When do saw-whet owls nest in Idaho?

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

What native plants attract saw-whet owls in Idaho?

Tall goldenrod, Paper birch, Chokecherry, Common hackberry, Rocky Mountain juniper, Ponderosa pine, Rabbitbrush, Douglas fir are native plants in Idaho 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 Idaho

Black-capped Chickadee Downy Woodpecker Hairy Woodpecker American Goldfinch White-breasted Nuthatch House Wren House 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 Common Redpoll 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 Juniper Titmouse Pygmy Nuthatch Black-chinned Hummingbird Rufous Hummingbird Broad-tailed Hummingbird Lesser Goldfinch Cassin's Finch Spotted Towhee California Quail Western Bluebird Mountain Bluebird Say's Phoebe White-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 Wild Turkey Mallard Great Blue Heron Belted Kingfisher Brown-headed Cowbird Ruby-crowned Kinglet Golden-crowned Kinglet Hermit Thrush Pine Grosbeak Red Crossbill Gray Catbird Western Tanager Black-throated Sparrow Lark Sparrow Green-tailed Towhee Pinyon Jay Clark's Nutcracker Western Screech-Owl Hooded Merganser Band-tailed Pigeon Yellow Warbler Common Yellowthroat American Redstart Yellow-breasted Chat Orange-crowned Warbler Red-eyed Vireo Warbling Vireo Least Flycatcher Western Kingbird Ash-throated Flycatcher Cliff Swallow Northern Rough-winged Swallow Bank Swallow Common Nighthawk Canada Goose American Coot Killdeer Spotted Sandpiper Black-crowned Night Heron Turkey Vulture Osprey Bald Eagle Merlin Peregrine Falcon Burrowing Owl Lewis's Woodpecker Black-backed Woodpecker American Three-toed Woodpecker White-headed Woodpecker Savannah Sparrow Vesper Sparrow Snow Bunting Lapland Longspur Horned Lark Common Redpoll White-winged Crossbill Gray-crowned Rosy-Finch 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.