I have a lone duckling, (it's companion died) and I'm a bit worried about its development. It seems to be growing in size nornally, but it's wings are just as small as when it was a few days old. Got these from a store, dont know exactly how old but I'm guessing about 3-4 weeks as its just starting to get s few tail feathers. Also, it's beginning to go bald on the side of its neck and under its tummY. Is it getting ready to feather there? Please enlighten me, I'm new to ducks!