I came across a beautiful male wood duck (Aix sponsa) in Bond Park this week. He seemed to be friendly with a female mallard duck (Anas platyrhynchos). I read that it’s pretty common for both mallard ducks and wood ducks to breed with other types of ducks. Their hybrid offspring are usually infertile, though.
If you happen to go to over to Bond Park, take a look in the pond to see if you can find the pair.