It's just dried up berries... :~)
I wonder if the berries had fermented a little... could have been funny watching a drunk raccoon stagger around. There was a tree across the street from our house when I was growing up, that produced berries of some kind. In the fall the birds would eat the berries that fell on the ground, and sometimes get a little too much... they'd flop around on the ground, unable to fly until they sobered up.