Males can be found congregating at puddles (puddling) in large numbers. Water and minerals dissolved in it are ingested at these social gatherings. Females do not partake in this activity.
Females lay eggs on the southern leaves of trees for more sun exposure. Young caterpillars are white and brown, resembling bird droppings making them less likely to be eaten. Later caterpillars are green and eventually brown, blending in with leaf cover. They have enlarged heads that have two false eyes and a yellow 'collar'. It has an ostromerium behind its head, where a gland secretes a foul odor when disturbed. They feed on a variety of leaves like those from birch, black cherry and aspen trees. They are not a pest however so they do not require control. They pupate through the winter and emerge as winged adults in the following spring.
Adults are active from late spring into mid-summer where they can be seen visiting flowers for nectar. Look for them in open deciduous forests where host trees live. They are also at home in more developed environments like backyards, gardens and parks in urban areas.