I have a Muscovy go and 'steal' another's ducklings that were several days younger. A week is a bit much, but hopefully she'll take them. Muscovy are amazing mothers, usually.Yes, I picked up water fowl crumbles. The experienced mom seems to move around where she sleeps, but stays close to our house. It’s nearly 100 degrees here during the day but at night will go down a bit. I will set up a brooder even if just for a couple nights. . She comes to feed every morning and stays for awhile under a tree. She also aimed back at night to feed. I am hoping to add the duckling then. The ducklings are a week old today that she has. Keep your fingers crossed.