From The Raptor Trust
Eastern Screech Owls often go through a 'catastrophic molt" which means that they shed all their feathers at once. Molting helps birds like Weird Alice shed feather parasites, grow in a new 'do, and get ready for migration, if that's what their species does. Weird Alice will look a little silly for a while, but when her feathers grow back she will be her normal beautiful self.
I'm going back here in 2 weeks, so I hope to get to see her looking extra weird!
As always, I'll try to get some pics, though the fencing here is the worst I've ever encountered in an animal enclosure as far as taking pics.