Hi my Ducklings are about 5 -6weeks old now and I have noticed their wings are getting rather bald I can see they are growing their feathers in their tails etc and can feel ones popping up over their bodies, do the wings go a bit bald before feathers grow there? The skin is nice and healthy pink and no signs of injury, I am worried they will get sunburnt. This is my first time having ducks and they share my coop with chickens and they all seem to get on happy.