A photo of a swallowtail caterpillar in parsley, a Woodsy Owl anniversary, poor outlook for Wisconsin wild rice and an ID of the Chicago River loach are among the notes from around the Chicago ...

A larva of swallowtail butterfly Papilio xuthus changes its body pattern at the 4th molt. The juvenile larva […] Photos: Caterpillar transforms from mimicking bird droppings to a leaf Photos: ...

The pipevine swallowtail caterpillar feeds exclusively on pipevine plants that contain active aristolochic acids, which the caterpillars hold in store for their butterfly selves to use as a ...