Animal Kingdom: Birds. 6 Characteristics of Birds. Endothermic (warm blooded) Vertebrates (Hollow Bones!) 4 Chamber Heart All Have Feathers All Lay Eggs Have Scales on Feet and Legs. How do birds fly?. The top has less “air pressure” and this produces an UPWARD force
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Regular periodic journey from one place to another for food, reproduction or warmth
shape to birds body
By Mrs. Efros,
Schofield Middle School
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