I like your story about Jack. I have a mallard too, and she looks EXACTLY like Jack. are you positive that he is a male? We thought Pascal was a male for a while, but once her feathers started coming in, we were sure she was a girl. You can see her at http://petoftheday.com/talk/showthre...threadid=12391
You'll have to give us an update when Jack learns how to fly.
When he quacks, does he go "peep peep peep peep QUACK peep peep"? Pascal is learning her quack too. She is about 8 weeks old.