Bottom right duck is an american wigeon. white and black duck might be a bufflehead duck.
The American Wigeon (also American Widgeon or Baldpate), Anas americana is a species of wigeon in the dabbling duck genus Anas. If this is split up, all wigeons will go into their old genus Mareca again. It is a common and widespread duck which breeds in all but the extreme north of Canada and Alaska and also in the Interior West through Idaho, Colorado, the Dakotas, and Minnesota, as well as eastern Washington and Oregon. It...