Nature Blogger logoNature Blogger

Barred owl

The barred owl (Strix varia) is a large North American owl known for its distinctive "Who cooks for you, who cooks for you all" call. Primarily found in mature forests and woodlands in eastern North America, it has expanded its range westward, where it is considered an invasive species. This owl is characterized by its brown to gray plumage with dark striping on its underside and its large, rounded head without ear tufts.

Key Facts

  • Native to eastern North America, with a significant westward range expansion.
  • Prefers mature forests and woodlands, often near water sources.
  • Diet primarily consists of small mammals, but is an opportunistic predator of other small vertebrates and invertebrates.
  • Easily identified by its distinctive "who cooks for you, who cooks for you all" vocalization.
  • Females are larger than males, a trait known as reverse sexual dimorphism.
  • Considered an invasive species on the west coast, impacting native spotted owls.
Barred owl
Scientific Name
Strix varia
Common Names

Northern Barred Owl, Striped Owl, Hoot Owl, Eight-Hooter Owl, Old Eight-Hooter

Habitat

Mature Forests, Old Deciduous Forests, Mixed Forests, Coniferous Forests, Open Woodlands, Bottomland Hardwood Forests, Oak Savanna, Cabbage-Palm Areas, Riparian Areas, Swampy Ground, Wooded Areas In Mountainous Regions, Mixed Swamps

Geographic Range

North America, Eastern United States, Southern Canada, Mexico

Physical Description
The barred owl is a large owl, typically grayish-brown or brown overall, with dark striping on its underside. The head is large and rounded without ear tufts, and it possesses a pale grayish-brown facial disc with subtle concentric lines. Its eyes are dark brown, and the bill is pale straw-yellow. The underside features horizontal barring on the throat and upper chest, and bold vertical streaking on the belly, with colors ranging from blackish to rufescent-brown. The flight feathers are barred with whitish buff and brown, and the tail has 4-5 whitish bars. Young owls are fluffy brownish-white with less distinct markings and may have a pale, blue-green cere.
Size Range Cm
40 to 63
Wingspan Range Cm
96 to 125
Diet

Small Mammals, Birds, Reptiles, Amphibians, Invertebrates

Vocalization
The barred owl is a powerful vocalist with spectacular, loud, and emphatic calls. Its usual call is a series of eight accented hoots, commonly remembered as "Who cooks for you, who cooks for you all." Other calls include an "ascending type" or "legato" call and a "mumble." When agitated, they emit a buzzy, rasping hiss and click their beaks. Females and juveniles beg with high scratching notes, and female calls are typically higher-pitched with longer terminal notes.
Lifespan Years
Not specified in text
Average Weight Kg
Males: 0.468 to 0.812; Females: 0.610 to 1.150
Breeding Season
Late January to early April
Nesting Habits
Nesting typically occurs in tree hollows or snags, though other nesting sites are sometimes used. They raise a relatively small brood.
Number Of Eggs
Not specified in text
Social Behavior
Not specified in text
Predators

Avian Predators

About Barred owl

The barred owl (Strix varia), also known as the northern barred owl or striped owl, is a large species of owl native to North America. It belongs to the true owl family, Strigidae, and is part of the genus Strix. These owls are predominantly found in mature forests and woodlands, particularly in eastern North America, though they have expanded their range westward and are now considered an invasive species along the west coast.

Description and Characteristics

Barred owls are characterized by their brown to gray plumage, with distinctive dark striping on their underside. They possess a large, rounded head without ear tufts and dark brown eyes. Their distinctive call, often described as "Who cooks for you, who cooks for you all," is a key identifying feature and can carry long distances. The barred owl is an opportunistic predator, with its diet mainly comprising small mammals, but also including other small vertebrates and invertebrates. Females are typically larger than males, exhibiting reverse sexual dimorphism.

Habitat and Range

The preferred habitat of the barred owl includes old deciduous, mixed, and sometimes coniferous forests. They are often found in bottomland hardwood forests, riparian areas, and swampy grounds. Their native range is primarily the eastern United States and southern Canada. However, due to increased forestation in areas like the Great Plains, they have successfully expanded their territory westward, reaching as far as California, British Columbia, and southeastern Alaska.

Conservation and Impact

The westward expansion of the barred owl has led to significant ecological concern, particularly regarding its impact on the related and threatened spotted owl. Evidence suggests that the presence of the invasive barred owl poses substantial threats to spotted owl populations, leading biologists to recommend management strategies such as culling operations to mitigate these negative effects.

Vocalizations

The barred owl is known for its loud and varied vocalizations. The most recognized call is a series of eight hoots, often mimicked as "Who cooks for you, who cooks for you all." They also produce an "ascending type" call and a "mumble." When agitated, they may hiss, click their beaks, or emit "cat-like screams" and "prolonged outbursts of cackling." Peak vocalization periods typically occur between late January and early April, with the most frequent calls heard between dusk and dawn.

Source: Wikipedia ↗

Frequently Asked Questions

What does a barred owl sound like?

The barred owl is a powerful vocalist, famous for its "Who cooks for you, who cooks for you all" call, which consists of eight accented hoots with a downward pitch at the end. They also have other calls, including an "ascending type" or "legato" call and a "mumble" call. When agitated, they can produce a buzzy hiss and beak clicks.

Where do barred owls live?

Barred owls are primarily found in eastern North America, inhabiting mature deciduous and mixed forests, as well as open woodlands. They have also expanded their range westward into areas like British Columbia, Washington, Oregon, and California, where they are considered invasive.

What do barred owls eat?

Their diet mainly consists of small mammals. However, barred owls are opportunistic predators and will also prey on other small vertebrates like birds, reptiles, and amphibians, as well as a variety of invertebrates.

What is the difference between a barred owl and a spotted owl?

The barred owl and the spotted owl are related and have been hypothesized to be within a superspecies. However, genetic testing shows they diverged very early. Barred owls are expanding into the range of the threatened spotted owl, posing a threat to its population.

Are barred owls active at night?

Barred owls are primarily nocturnal, with their peak vocalization times occurring between 6:00 pm and 6:00 am. While they do call during the day, especially when provoked, their most active hunting and calling periods are after dusk and before dawn.