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Additional
bird anatomy
English Wikipedia - The Free Encyclopedia
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Bird anatomy
Bird anatomy
, or the
physiological structure
of
birds
' bodies, shows many unique adaptations, mostly aiding
flight
. Birds have a light
skeletal system
and light but powerful
musculature
which, along with
circulatory
and
respiratory systems
capable of very high
metabolic
rates and
oxygen
supply, permit the bird to fly. The development of a
beak
has led to
evolution
of a specially adapted
digestive system
. These
anatomical
specializations have earned birds their own
class
in the
vertebrate
phylum
.
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