MIGHTY MORPHING MEALWORMS. Learn about the four stages of a mealworm's life cycle (egg, larva, pupa, adult darkling beetle) with Krystal Balmes and Sahil from the Brooklyn Preschool of Science.

This DIY mealworm feeder made from tuna cans costs less than a few dollars to make. You just need a few supplies and tools. Then hang it in a tree, and wait for those beautiful bluebirds to arrive.