found in area recently cleared of dense invasive grape
black cherry in Frick Park, Pittsburgh Pennsylvania
While leading a field trip for a 6th grade birding class, I observed my first Mourning Cloak of the season in a canopy gap along the Nine Mile Run Trail. I did not have a camera, nor an opportunity to photograph this individual, but ID was certain - dark black/brown wings with creamy yellow border.
This infestation is a couple hundred square feet in size, and is the only one I have seen around Frick Park.
The mapping may not be precise - my GPS was way off.