Zebra swallowtail caterpillars are mostly green with one thicker blue, black and yellowish band close to the head. Thin yellow stripes accent their abdominal segments. Closer to hatching ...

Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and emerge as large orange-and-black butterflies. Monarch's multigenerational migration ...

Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and emerge as large orange-and-black butterflies. Monarch's multigenerational migration ...