I started off with 4 ducklings. 3 rouens and a magpie. I believe they are between 6 and 7 weeks old. Only 1 of them had a lot of feathers the other 3 were growing their feathers at a slower rate. This morning i let my ducks out to free range when i left for work. My yard is fenced in and the gate was still locked when i got home but the rouen who had grown more feathers was missing. Could she have flown away?