Young scholars read the book The Very Hungry Caterpillar by Eric Carle and then they observe, record and analyze how much milkweed monarch larvae eat in a controlled environment.

Why do birds molt? How many times a year do they molt? When do birds molt? These questions and more are answered on this comprehensive site.

Striking photos are presented in this colorful site that show the molting stages of the Calliope Hummingbird.