TTENTION: The survey is only open until January 31, 2016, so if you haven't yet, please take part in it. Every little contribution counts!
------------
I highly encourage everyone with captive waterfowl in North America to take some time to fill out this survey created by the International...
It looks like a Wood Duck hen. If it was a male it would have some red coming in in its eyes, and the facial markings would be very prominent and distinct.
To me they appear to be too big for teal, plus they said the eggs were large. They are not wood ducks. I did rescue some mallard ducklings before, and they were tiny but I did not get any pictures of them, and unfortunately none survived... Hopefully you can figure this out!