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 ...

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 ...

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 caterpillar grows up to be a handsome black swallowtail butterfly that wouldn’t/couldn’t hurt a flea. Mary Reid Barrow, [email protected] Have you come across a surprise or puzzle in nature?