You can look in the spring only, look on trees, mailboxes and any plants you can get your hands on. To attract them though, buy a milkweed plant and set it up in your front/back yard.
you can find caterpilars on the grass or in a basil plants or in the bottem of plant pots
spring about early April
green plants
Caterpillars use their antennae to help them find food because they don't have really good eyesight.
Caterpillars are eaten by a wide variety of other animals, sometimes, even by other caterpillars. So, the harder it is to find a caterpillar, the better it is for them, so they can mature to pupate and become a moth or butterfly.
answ2. Caterpillars may be found feeding on leaves. But there will be more of them in spring and summer than at other seasons.
They find leaves and make a house
Usually by leaves,branches, or trees
go look for one and find out. lazyass.
use your magic powers
You can usually find them on milkweed plants.
Easy black swallowtail caterpillars are smaller caterpillars. SwallowTail caterpillars are bigger than black swallow tail caterpillars
well, I'm not sure but I heard that they usually come out in the morning.