I thought I had Indian Runner ducklings. But after reading some posts I am not sure now. I bought the 2 black ducklings from Tractor Supply in Tomball, TX. They were the only 2 black ones they had. The other 2 black and yellow striped ducklings I bought with them I know to be Mallards. Can anyone tell me from these photos what breed of duck the black ducklings are? Thank you for your help.