Likely no, your too soon for vocals.. usually about 4-5wks.. more experienced can start to hear at about 3-4wks... sizing, bill colours that is all a dice roll and nothing precise about it whatsoever. I can fully appreciate your position however, if you already have 4 drake and only 1 female? you need to start thinking about how you'll handle this.. drakes at min should have 2-3 ducks per.
I would sort that existing flock and then worry about adding more... what do you want from ducks? meat, eggs, pest control? pets etc...
I would sort that existing flock and then worry about adding more... what do you want from ducks? meat, eggs, pest control? pets etc...