Characteristics of Birds
feathers, wings, lightweight bones, adaptions for flight, ectotherms
outgrowths of the skin
Functions of Feathers
flight and insulation
cover the body
located beneath contour, trap air for insulation
secretes oil for waterproofing
Purpose of Respiration in Birds
flight needs large amounts of oxygen
Air System in Birds
eggs are incubated
Divided according to
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