"Birds are the only wild animals most people see every day. No matter where we live, birds live with us. Too many of us take them for granted. We don't appreciate how very strange they are, how different. We don't realize what otherworldly creatures birds are.
Their hearts look like those of crocodiles. Birds are covered with modified scales -- we call them feathers. Their bones are hollow, permeated with extensive air sacs. They have no hands. They give birth to eggs.
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