This is a new development. Several times in the past week, a turkey has pooped in the spa (my spa is connected to the pool, they share the same water supply, etc.). I did a search on "turkey" and didn't find anything (actually a few references to humans popped up, but not actual turkeys). I'm going to try putting a plastic snake and a plastic crocodile in the spa (maybe one in the pool too), and I will post the results after I've had a chance to monitor it for a week or so.