I would bring her inside to keep warm, and contact your large animal vet just in case. Any ill animal will benefit from staying warm. Sometimes it's a very simple thing, and sometimes it's serious. I'm paranoid and like the peace of mind of contacting my vet, because you just never know.
Not sure what breed my newly rescued ducks are, but suspect they might be White Layers. They weigh less than 4 pounds each, and are hilarious! They each give me one egg a day - one is green, one is white. They are a riot, and march around like they own the place.
We recently lost our beloved toulouse female to reproductive tumors, which left our other female missing her friend. We have an imprinted male, but he is kept separate because although he loves me, he's, well, a jerk to other birds haha! It happened that I was contacted by a rescue about two...