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The birdFerruginous Pygmy-Owl (Glaucidium brasilianum)
Cabure Chico (Glaucidium brasilianum) by María Zeta, via Wikimedia Commons, licensed under CC BY 4.0
owl

Ferruginous Pygmy-Owl

Glaucidium brasilianum

A tiny, day-active owl of arid scrub and thorn forest across the Americas, often revealed by its bold rufous or gray-brown coloring and long, cocked, barred tail.

Feather type
Short rounded flight feathers; long banded tail; streaked body feathers
Colours
Rufous or grayish-brown with fine streaking, spotted crown, and a rufous or dark tail with pale bars
Bird size
Sparrow-sized, ~15-17 cm

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Overview

The Ferruginous Pygmy-Owl is a small, feisty owl found from the southwestern United States and Mexico south through Central America into much of South America. Despite its small size, it aggressively defends territory and preys on birds, lizards, and insects, often larger relative to its own body size than expected.

It occurs in a rufous morph and a grayer morph across its wide range, and shows the same false eyespot pattern on the nape seen in other pygmy-owls. It is frequently active in daylight, perching conspicuously and flicking its long tail from side to side.

Its wide range across deserts, thorn scrub, and tropical lowlands means its feathers turn up in a broad variety of arid and semi-arid habitats, often near mesquite, saguaro, or riparian corridors.

Identifying the Feather

Size and shape

Small feathers matching a bird about 15-17 cm long, with short rounded wings and a notably long tail relative to body size, often held cocked at an angle.

Color and pattern

  • Ground color is either warm rufous or grayish-brown, varying regionally and individually.
  • The crown is finely streaked rather than boldly spotted, a useful distinction from the more spotted crown of some other pygmy-owls.
  • Underparts are whitish with bold rufous or brown streaking.
  • The tail is long, rufous or dark brown, with several narrow pale bars, and is proportionally longer than in the Northern Pygmy-Owl.
  • Shafts are pale.

Distinguishing from similar species

Compared to the Northern Pygmy-Owl, Ferruginous Pygmy-Owl feathers usually show a finely streaked rather than spotted crown and often a warmer rufous tone overall, with a relatively longer tail. Range overlap is limited, helping confirm identification.

Plumage & Molt

Plumage varies from rufous to grayish-brown morphs, both with a finely streaked crown, whitish underparts marked with bold streaking, and a long tail barred with narrow pale bands. The nape bears a pair of dark false eyespots outlined in white or buff. Sexes are alike in color, with females larger. Juveniles are duller with less defined streaking. A single annual molt follows breeding, with feathers replaced gradually.

Habitat & Range

This species occupies a wide range of arid and semi-arid habitats including desert scrub, thorn forest, mesquite woodland, and riparian corridors, extending from southern Arizona and Texas through Mexico, Central America, and much of South America to Argentina. It is largely resident throughout its range, with little seasonal movement.

Behavior & Field Notes

Ferruginous Pygmy-Owls hunt small birds, lizards, large insects, and occasionally small mammals from perches, often in daylight. They are known for boldly attacking prey larger than themselves and for aggressively mobbing intruders near the nest. The male's call is a long series of monotonous, evenly spaced whistled notes. Nests are placed in natural cavities or old woodpecker holes, frequently in cactus such as saguaro in the northern part of its range. When identifying a feather, look for the small size, streaked rather than spotted crown, rufous or gray-brown tone, and long tail with narrow pale banding.

Frequently asked questions

How do I tell a Ferruginous Pygmy-Owl feather from a Northern Pygmy-Owl feather?

Ferruginous Pygmy-Owl feathers typically show fine streaking rather than bold round spotting on the crown, a warmer rufous tone in many individuals, and a relatively longer tail; the two species' ranges also barely overlap.

Why does this owl sometimes look reddish and sometimes grayish?

The species has two color morphs, rufous and grayish-brown, which occur across its range independent of sex or age, so both tones are normal for this owl.

Is this owl active during the day?

Yes, it is frequently active in daylight, hunting from open perches and often flicking its tail, which makes daytime sightings more common than for most owls.

What habitat is most likely to have this owl's feathers?

Look in arid scrub, thorn forest, mesquite, saguaro desert, and riparian woodland from the southwestern United States through Mexico, Central America, and much of South America.