They are the birds
Homoeothermic (constant body temperature)
Have a four chambered heart
They have a streamlined body for locomotion in air
The skin is dry and covered by feathers
They have scales on their legs
They posses hollow bones
They are oviparous (they lay eggs)
Their mouths are modified into beaks
vindori answered the question on March 22, 2018 at 11:17
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