Nothing notable for the first week. Noticed yesterday that it's not very active. All of the rest are up and moving around all the time. This one sleeps until disturbed, then goes back to sleep when the others go away. If I pick her up she chirps for a minute and then closes her eyes and lays in my hands. I don't notice her eating but she will drink if I dip her beak in the water. She doesn't seem to be holding her wings up either. All the rest have them tucked in, this one's just hang there. The rest have all about doubled in size, this one doesn't seem to have grown at all. They were vaccinated at birth and I've been feeding them medicated feed. Any ideas?