Owls
The
Owls are birds of prey that belong to the order Strigiformes. There are more
than 200 species of owls and they live on all continents in many different
habitats except Antarctica. All owls are
carnivorous predators. Owls prey on a diversity rodents, insects, and small
birds. There are even species of fish hunting owls such as the Blakiston's Fish
Owl.
Owls
are solitary active nocturnal predators but there are exceptions. The Northern
Hawk Owl, the widely distributed Short-eared Owl, and Burrowing Owl are to some
extent active during the day and in the twilight hours. They kill their small
capture prey like rodents by using their talons to crush its skull and ribcage.
Then swallow it whole. Later they regurgitate pellets with all of the
indigestible parts of everything they eat. Owl pellets have everything from
feathers, claws, bills, or teeth, to bones and fur.
All
owls have a wide face with some kind of facial discs around very large eyes,
short curved sharp beaks, large sharp curved talons, and long wings for their
bodies. They are divided into two families. Strigidae; known as typical owls
and the more specialized Tytonidae; better known as the barn owls. Barn owls
have a prominent unique heart shape facial disc created by short rigid dense
feathers. It is used to collect sounds and focus them to the owl's ears that
are asymmetrically place on the owls head. The slight difference in the time it
takes to reach both ears allows the barn owl to pinpoint the location of that
sound. By moving their heads and using only the sounds the prey makes the barn
owl can find and capture that prey using sound alone.
Owls
hunt for their prey using great night vision, excellent hearing, and by using
stealth. They have two forward looking eyes so large they are fix into place.
Because they cannot move their eyes they swivel, bob and move their heads to
help the fix the position of what it is looking at. Owls can swivel their head
almost completely around allowing them to see behind their backs without moving
their body. The serrated edges on the owls’ soft feathers greatly reduce the
sound of flying. They can fly almost silently. This allows the owl to close in
on prey like mice by surprise.
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