The beautiful yellow large butterflies that we see in our yards are Eastern Tiger Swallowtails. They love gardens and mud puddles in the garden. You also find them in parks, forests, fields, and near streams. They are the first butterfly I see, usually in late spring. In my yard they enjoy verbena, cone flowers, and sweet pea probably because they seem to enjoy pink, purple and red flowers. I recently found out that their host plants are mostly trees and they have a lifespan of about two weeks. Read more at: https://www.butterfliesandmoths.org/species/Papilio-glaucus.