In their effort to misinform students, evolutionists often point out that feathers and scales are both made of the same protein, keratin. They will tell you that this proves that feathers evolved from scales. The book will use fancy terms to make it sound official such as, "dinosaurs had some avian characteristics." Well, a bicycle has certain "automotive characteristics," like a frame and tires; but this does not prove that bicycles turned into cars over millions of years!