Bald spot on duckling?

[kikidee]

Sorry I don't have pics yet but I will when my camera is fully charged.

My 13 day old cayuga male ducklings are lovin life and seem to be in perfect health. One however has this bald spot on the hip area. I know they start getting bald spots when they get their new feathers but I thought that happens between week 4-6?

 

[duckyfromoz]

They are very fast growing and the downy feathers they hatch with thin out in places before the next growth comes through. Thinning is ok... in a week or so it shouldnt be so noticeable as more down will grow before the feathers start as well. .