Cuy - guinea pig?
I've seen cuy roasting on spits at food carts in Flushing Meadows-Corona Park.
They seemed to be huddled in the area of Perimeter Road & Pacific Avenue, if you want to check it out on Google Maps. It's a large park, so mapping it out is a good idea.
I was there on a hot summer day, so you may have to wait a few weeks before they're out there.