They are made from pig skin which is edible, and even more common in New York for eating than squirrels (which are a big rural delicacy):
Pork rind (known and invented in the United Kingdom as pork scratchings[1] , as a room-temperature snack, or crackling, served hot as part of a meal, and in Australia and New Zealand as pork crackle/crackling), is the fried or roasted skin (rind) of a pig. Frying melts most of the fat from the pork rind. Uncooked pork rind may be used as a fishing bait, or cooked with beans or stewed vegetables or in soups.
Bones- even though bones are indedible and not considered treif (unless they’re small and contain marrow) they are still assur to eat medirabanan.