These realistic, full-color paper models could not be easier to make — and they really fly! Simply press along the perforations, fold according to the instructions, add a penny or a dime for weight, and then send them skyward in long, straight glides or looping swoops. In addition to the fun of making and flying models, these books offer ways of learning how to identify species. These books provide readers of all ages with an opportunity to learn about the different species as well as the chance to play with flying paper toys! 24 press outs per book.