After researching online, I came to the conclusion I have one Indian runner duck and one buff duck (both of which are just about five months old). I'm fairly certain the runner is a male and the buff is female. How can I be sure of the sex? Is it likely that two different types will breed? They have been together since they were born, but I've noticed the "male" is starting to get protective of her and he is almost obnoxious when my buff comes up to me. He doesn't like when she wanders away from him and puffs up and carries on honking. Is this breeding behavior, or just separation anxiety? I'm still very new to ducks and not sure what to expect as they get older.
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7/10/12 at 4:52am