As every other creature in the world birds also need to
rest. It has been proved that birds can live with less sleep than humans. Birds
sleep in order to relax their muscles and save energy but not to rest their
brain.
Great part of sea birds sleep for a very short time. For example,
swallows land on water very rarely and they can fly for years sleeping only for
couple of seconds at a time. Sea birds fly using the wind, so they save their
energy.
Most of the birds are active during the day and rest during the night.
Exception are birds that hunt at night, such as owls and nighthawk.
Birds use
nests for mating but other than that they rest in bushes, on trees and on the
ground itself when they are not in danger. For instance, most of the ducks
sleep afloat and some sleep standing.
There are birds that sleep hanging from
the branches, most often with one leg. They don’t fall on the ground because their
claws can remain clenched when the rest of the muscles relax.
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