Duck Daddy and His Five Girls - 11 weeks

So the girls are about 11 weeks old. Feathers are all over the yard. They are loosing, pulling out, and spilling feathers with some downy edge to them, and these feathers are everywhere in the lawn.

The ducks are also uneven in color. Will they stay this way, or will they get darker on their fawn colored parts as they loose their young ducky feathers and grow the next crop of them? This is our first duck adventure, so we are not sure, but here's how they look right now.