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Several types of owls are crepuscular—active during the twilight hours of dawn and dusk; one example is the pygmy owl (Glaucidium). A few owls are active during the day, also; examples are the burrowing owl (Speotyto cunicularia) and the short-eared owl (Asio flammeus). Much of the owls' hunting strategy depends on stealth and surprise.
Some crepuscular animals may also be active by moonlight or during an overcast day. Matutinal animals are active only after dawn, and vespertine only before dusk. A number of factors affect the time of day an animal is active. Predators hunt when their prey is available, and prey try to avoid the times when their principal predators are at large.
Unlike most owls, burrowing owls are often active during the day, although they tend to avoid the heat of midday. But, similar to many other species of owls, they are mostly crepuscular hunters, as they can utilize their night vision and attuned hearing to maximum potential during sunrise and sunset .
Owls are well known for being nocturnal, but some owls are active during the day. Look up nocturnal in Wiktionary, the free dictionary. Nocturnality is a behavior in some non-human animals characterized by being active during the night and sleeping during the day.
The barred owl is normally nocturnally active and sleeps during the day. Like most species of owl in the Strix genus, the barred owl tends to be highly territorial regardless of the time of year. [4] [83] [53] [82] The territories are claimed by singing from different perches, often near the perimeter of its perceived home range.
The composition of brown markings about the wing, although not foolproof, is the most reliable technique to age and sex individual snowy owls. [9]: 48 Most owls sleep during the day and hunt at night, but the snowy owl is often active during the day, especially in the summertime. [7] The snowy owl is both a specialized and generalist hunter.
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Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.