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This Concept Map, created with IHMC CmapTools, has information related to: birds again, Birds have Insulation, Birds are Warm-Blooded Animals, Rapid Digestive Systems is nesasary for a High Metabolism, Birds need Food, Birds can Fly, Birds have Feathers, Birds lay Eggs, Birds have Hollow Bones, Birds have Constant Body Temperature, Birds have Beaks, Birds have Rapid Digestive Systems, Birds have Two Wings, Birds have Two Feet