Is it possible to have a hermaphrodite duck? We are very puzzled by one of our Muscovies at the moment. He/she is bigger than the girls, but much smaller than the boys. Big feet, hisses like a boy, head shaped like a boy but has girl shaped caruncles. He/she is old enough to be able to visually recognise the sex, but he/she is just so odd! Is there a possibility he/she could really be both?