Cat's a sleeper

She makes cozy little nests in unmade beds. She has her own bed, but she's fond of duvets (it's the bird feathers, I'm sure). Sometimes she's so burrowed into the bedding that I don't realize she's there. The most alarming sounds erupt from within when I whip the duvet into the air. Then there's a streak across the room and out the door ... and fur flutters down.