Ferruginous Pygmy-owl

Least Concern

Glaucidium brasilianum

This tiny predator packs a powerful punch, defying its tiny stature with fierce hunting skills that span forests from Arizona to Argentina.

Visual Identification

Appearance

The Ferruginous Pygmy-owl is a small, compact owl with a rounded head lacking ear tufts. Its upperparts are reddish-brown or rufous, while the underparts are streaked with white and brown. The crown is spotted with white, giving a speckled appearance.

Females are similar to males, but as they are slightly larger, they also frequently have more rufous coloring in their plumage. Juveniles resemble adults but have slightly paler and grayer plumage.

Two distinct color morphs exist: a rufous form and a greyer form, with the rufous being more common in arid regions.

Size

Length

15cm to 19cm

Wingspan

38cm to 45cm

Weight

60g to 75g

Colours

Males and females have similar plumage

Primary Colour

Brown Rufous

Secondary Colour

White Grey

Beak Colour

Yellow

Leg Colour

Yellow

Habitat and Distribution

Habitats

Woodland

Garden

Wetland

Coastal

Urban

Farmland

Grassland

Desert

Tundra

Rainforest

Mountain

Savanna

Distribution

Ferruginous Pygmy-owls inhabit various habitats across the Americas, from southern Arizona and Texas in the United States through Mexico, Central America, and much of South America. They prefer semi-open woodlands, thorn scrub, and desert areas with giant cacti.

In the United States, they are year-round residents in limited areas of the Southwest. Their distribution remains relatively stable throughout the year, with no significant seasonal movements observed.

Elevation Range

Sea level to 2,480 meters

Climate zones

Tropical, Subtropical, Temperate

Distribution Map

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Behaviour and Ecology

Bird Attributes

Tap the icon next to each attribute for more information.

Agility 85
Strength 60
Adaptability 80
Aggressiveness 70
Endurance 65

Diet

Ferruginous Pygmy-owls are versatile predators, feeding on a variety of small animals. Their diet includes insects, small mammals, birds, lizards, and amphibians.

Prey includes large insects such as grasshoppers, cicadas, crickets, beetles, and moths, scorpions, and rodents, including pygmy mice and harvest mice.

They often hunt from perches, swooping down to capture prey on the ground or in mid-air, demonstrating remarkable agility for their size.

Behaviour

Ferruginous Pygmy-owls are diurnal, often active during daylight hours, especially at dawn and dusk. They have a distinctive undulating flight pattern, alternating between quick wingbeats and short glides.

These territorial owls often perch conspicuously on exposed branches, scanning for prey or potential threats.

Vocalisation

The Ferruginous Pygmy-owl's call is a series of hollow, whistled notes, often described as 'poo-poo-poo' or 'whoop-whoop-whoop'. This call is repeated steadily, about 2-3 notes per second, and can continue for several minutes.

They also produce a variety of chirps, trills, and barks in different contexts.

Nesting & Breeding

Breeding season for Ferruginous Pygmy-owls typically begins in late winter or early spring. Males establish territories and attract females with persistent calling and food offerings.

These owls are cavity nesters, often using abandoned woodpecker holes, natural tree cavities, or even nest boxes. Females lay 3-5 white, roundish eggs in these cavities, which are used without additional nesting material.

Incubation lasts about 28 days, and it is primarily done by the female while the male provides food. Nestlings fledge after approximately 27-30 days but remain dependent on their parents for several weeks.

Lifespan

Typical Lifespan Range 5 - 8 years
0
3
5
8
10

years

The Ferruginous Pygmy-owl typically lives for 5 to 8 years.

Like all birds, lifespan can be affected by factors including predation, habitat quality, disease, and access to food sources.

Conservation and Status

Global Conservation Status

Least Concern [1]

While listed as Least Concern globally, some local populations face threats. In the United States, the Cactus Ferruginous Pygmy-owl subspecies is of particular conservation concern due to habitat loss and fragmentation in Arizona. Conservation efforts focus on protecting and restoring suitable habitat.

Population Data

Global Population Estimate

20,000,000 mature individuals [2]

Global Population Trend

Decreasing[3]

Birdwatching Tips

  • Look for them perched on cacti or tree branches in open woodlands
  • Listen for their repetitive, whistled 'poo-poo-poo' call, especially at dawn and dusk
  • Watch for their characteristic bobbing motion when alerted
  • In the US, focus on areas in southern Arizona and Texas

Additional Information

Quick Facts

Other names:

Cactus Ferruginous Pygmy-owl

Family:

Strigidae

Predators

Main predators include larger owls, hawks, and occasionally snakes. Their small size and diurnal habits make them vulnerable to a variety of predators.

Did You Know?

  1. Despite their small size, Ferruginous Pygmy-owls can take prey up to twice their own weight.
  2. They have false eye spots on the back of their head, which may help deter predators.
  3. In some cultures, these owls are considered good luck charms and are sometimes kept as pets despite legal protections.

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FAQs

What is the difference between Northern Pygmy-Owl and Ferruginous Pygmy-Owl?

Similar in size and coloring, there are some subtle differences between northern pygmy-owls and ferruginous pygmy-owls that help tell the two species apart.

There is some overlap between the range of these two tiny owls, with ferruginous pygmy-owls present further south than their northern counterparts, with a range that extends deep into Mexico, with a limited presence in the United States.

Both species are diurnal, mostly active at dawn and dusk, with northern pygmy-owls typically found at higher elevations. In appearance, the main difference is seen in the forehead markings, which are streaked in ferruginous pygmy-owls and spotted in northern pygmy-owls.

References

  1. 1

    website: BirdLife International. 2022. Glaucidium brasilianum. The IUCN Red List of Threatened Species 2022: e.T22689248A217038370.

    View source
  2. 2 3

    report, 2020: Partners in Flight