Butterflies and Moths (Rookie Read-About Science: What's the Difference?) (Library Edition)

Which one is which?

They're both insects. They both have wings and antennas and flutter through the sky. So how do you tell the difference between butterflies and moths? One way is to ask yourself if they fly mostly during the day or at night. These identification clues and many more can all be found in What's the Difference? Butterflies and Moths.