Buffy Silverman 
Can You Tell an Ostrich from an Emu? [PDF ebook] 

A huge bird with a long neck and big eyes looks up from eating. Then it runs away on its strong legs. Did you just see an ostrich? Or was it an emu? These animals look very similar, but they are different. Read this book to become an expert at telling these look-alikes apart. Learn the fascinating differences between similar animals in the Animal Look-Alikes series part of the Lightning Bolt Books collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books bring nonfiction topics to life!