I have 3 runner duckings that will be 5 wks old on Friday. One of them has always been bigger than the others and has stopped peeping like the others. Not quacking but a deeper almost mini goose honk sound. Drake? She/he is the white one in the middle. Also is supposed to be white and tan, but is showing no sign of anything but white feathers. I can deal with her being a him, but I really didn't want an all white duck.