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This Concept Map, created with IHMC CmapTools, has information related to: Untitled 3, Birds have beaks, Birds have hollow bones, Birds have feathers, hollow bones help to fly, Birds have rapid digestive systems, two wings help to fly, feathers help to fly, rapid digestive systems is nessasary due to high metabolism, Birds have two feet, Birds laye eggs, Birds have constant body temperature, warm blooded animal make them have insulation, Birds have two wings, Birds need food, Birds is a warm blooded animal, Birds have light body weights