vendredi 24 février 2017

Snowy Owl

The snowy owl is considered to be one of the largest and most attractive of the owls. It is called the snowy owl because of its white feathers. The male and female owls have different markings.

Male owls are mostly pure white with small spots and wing barring. The female has heavy gray-brown lines across her body and wings and speckled plumage. They both have large, yellow eyes, set in front of the face. Their ears are large and hidden under dense, white feathers. The snowy owl weighs 4 to 6 pounds and is 21 inches to 26 inches in length. The wings can span 4.7' to 5.4' in width.
They reach sexual maturity at 3-5 years old. The snowy owls choose one mate every breeding season, because they migrate. Their nest is a hollow, formed out of frozen turf and moss on a ridge or hill.
The male owl uses his echoing calls to find a mate. They look for a mate late in winter. He brings his mate an offering of food and displays his feathers to get her attention. After mating they search for a place to nest. The female owls can lay 2-16 eggs, but usually lays 5-7. The eggs are round and white. Incubation period is 30-33 days. The female owl lays the eggs two to three days apart from each other. By the time the last egg is hatched, the oldest nestling could be 2 to 3 days older than the youngest. When food is scarce, the larger birds eat the weaker, smaller nestlings to survive. 
Both male and female owls provide food for their young. The owls' plumage helps to camouflage the female owl as she sits on her eggs.
The owl can see its prey with both eyes at once, like humans. Their eyes take up more space in the skull than the brain. The snowy owls hearing is very sensitive and they can pinpoint voles and lemmings under deep snow. Their wings are long and broad, which allow it them fly close to the ground to catch its prey. Claws are long, curved and needle like. They act like weapons for catching and killing its prey.

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