Elf Owl (Micrathene whitneyi) — the smallest owl in the world LC

The Elf Owl (Micrathene whitneyi) is the world’s smallest owl. Native to the deserts of the southwestern United States and northern Mexico, this tiny nocturnal hunter embodies both charm and adaptability. Despite its size, it is a capable predator with keen hearing and silent flight.

Description and Appearance

The Elf Owl measures only 12–15 cm in length and weighs about 40 grams — less than a chicken egg. Both males and females have grayish-brown plumage with white spots that provide perfect camouflage among tree bark and cactus stems where the owl roosts during the day.

• Body length: 12–15 cm (4.7–6 in)
• Wingspan: up to 27 cm (10.5 in)
• Weight: around 40 g (1.4 oz)
• Average lifespan: 5–7 years in the wild

Habitat and Range

The Elf Owl inhabits deserts and semi-arid regions, especially areas with saguaro cacti or trees with old woodpecker holes for nesting. Its main range includes southern Arizona, New Mexico, Texas, and northern Mexico.

• Found in deserts, scrublands, and dry forests
• Roosts and nests in cavities made by woodpeckers
• Strictly nocturnal — active only after sunset

Diet and Hunting

Despite its tiny size, the Elf Owl is a fierce insect-eater. It hunts beetles, moths, grasshoppers, and sometimes small lizards or rodents. Using exceptional night vision and silent flight, it hunts swiftly and efficiently.

• Diet consists mainly of large insects
• Occasionally preys on small vertebrates
• Often stores food in cavities for later use

Breeding and Behavior

Breeding season occurs in spring. The female lays 2–3 eggs in a natural cavity or old woodpecker hole, often in a cactus. The male provides food while the female incubates the eggs for about 3 weeks. The chicks fledge at around one month old. Elf Owls are mostly sedentary, though northern populations may migrate short distances in winter.

• Breeds in tree and cactus cavities
• Female incubates, male delivers food
• Young leave the nest after about 4 weeks

Interesting Facts about Elf Owls

• Smallest owl species on Earth
• Weighs less than a standard chicken egg
• Produces a melodic “tu-tu-tu” call during the night
• Leads a solitary life except during breeding

Conservation and Population

The Elf Owl is not currently endangered, but habitat loss due to deforestation and cactus removal threatens local populations. In the U.S., it is protected in Arizona and New Mexico, where conservation efforts include habitat restoration and nest box programs.

Listen to the Elf Owl’s Call

On this page, you can listen to the voice of the Elf Owl (Micrathene whitneyi) directly — no external links needed.