As soon as the chirping began, Annabelle and Thatch sat up, then leaped off the bed to investigate. I was a little spooked: had someone crawled in the window without my knowledge? I decided it was a ghost, so I sat up and turned on the light. Thatch was back in the cat tree, Annabelle returned to bed, Stella crawled into bed with me, and I turned off the light. Around 1:00, I was wakened by the thud of something falling onto the floor.