Northern Pygmy-Owl
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Cavity Nester ⌀ 2.0" Custom

Northern Pygmy-Owl

Glaucidium gnoma

Tiny mountain owl no bigger than a sparrow, but a surprisingly aggressive daytime predator. The two black 'false-eye' spots on the back of its head fool prey into thinking it's still watching.

IUCN Red List
Least Concern

Widespread and abundant; no known immediate threats to the population.

Floor
4" × 4"
Interior height
10"
Entrance hole
⌀ 2.0"
Mount height
10–25 ft
Breeds
Apr–Jul
Broods / yr
1
Cool Facts

Things you didn't know about the Northern Pygmy-Owl

01

Smaller than many of its prey, songbirds the size of robins are regularly killed by this 2.5-oz owl.

02

Bears two black 'false-eye' spots on the back of its head that fool prey and mobbing songbirds into thinking it's facing them.

03

Active during daylight, a rarity among owls, and the reason songbirds mob them so aggressively.

04

Their monotonous single-note whistles, repeated every few seconds for minutes on end, are a defining sound of western mountain forests.

Range & Habitat

Where you'll find them

Resident in mountain forests from southeastern Alaska south through the western US to central Mexico.

By region
  • Pacific Mountains

    Common in mature conifer forests of coastal BC, Washington, Oregon, and California's Sierra Nevada.

  • Rockies & Southwest

    Year-round through the Rockies and southwestern sky-island ranges into the highlands of Mexico.

montane conifer forests oak-pine woodlands mature western forests
10-year local observation heatmap. Click a season above to isolate one band.
Custom Build

A Northern Pygmy-Owl house we make to order

Outside the standard line

Built to spec for the Northern Pygmy-Owl

This species needs a box larger or differently-shaped than our three standard sizes. We make these as one-off prints to the published nest dimensions, with all the species-specific requirements baked in.

Interior
4" × 4" × 10" tall
Entrance
2.0" round
Mount
10–25 ft
Site notes
Tiny but ferocious daytime hunter.
Build notes
Custom 4×4×10 cavity with 2" hole (smaller than any standard panel).
Request a custom build
Seasonal Care

When to install. When to clean.

Install by
By late March
Cleaning
Once a year, September
Winter use
Yes, overnight roosts
Western Mountains
Resident; install by late March.

Diurnal predator, takes songbirds up to its own size.