Pappykottke.org (@[email protected])
“According to Mr Peryer, it is not uncommon for geese to be bisexual, though he adds that the duo were the only pair in the Waikanae Estuary…It is also not unheard of for geese to mate with swans, with the offspring…known as a swoose.” https://www.bbc.com/news/world-asia-43054363
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