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 • (This is called lift!) Birds who do NOT fly! • Penguins • Ostriches • Emus Smallest / Largest Hummingbird Ostrich Migration: Regular periodic journey from one place to another for food, reproduction or warmth Compare BIRDS and REPTILES Birds Reptiles Types of Feathers • Contour: A large feather/gives shape to birds body • Down: Short fluffy/traps heat keeps the bird warm By Mrs. Efros, Schofield Middle School This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.