| http://www.w3.org/ns/prov#value | - Trees that are hosts to caterpillars include birch, chokecherry and cherry, cottonwood, elm, oak, and willow. (Here is a list of some common butterflies and their host plants.) Ask an adult to help you figure out which of those plants you have in your yard or someplace near your home where you could go to look for caterpillars.
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