Mourning Cloak (Nymphalis antiopa) When flying, these often look black with a yellow margin on the bottom of the lower wing, but if you get a chance to look at one when still, they have quite a few more colors.
Caterpillar Host Plants: Birch, willows, poplar, red maple, elm, aspen, and hackberry.
Adult Butterfly Hosts: Predominantly sap from trees, rotting fruit, and occasionally larval host nectar plants.