May be a turkey scratching? And just coincidence that a rabbit did its duty there. But if put a game camera out on a deer scrape you will often get a bunch of different critters visiting to mark it. It's just one of those scent posts like a mailbox where every dog goes and pees on it. Rabbits eat heir own poo though. They can't digest all that vegetation the first go around so will come back and

eat their pellets. The real green ones are the first pass through