I'm posting this site for personal reference regarding peregrines.

Lyman is making fun of me for watching these boring birds, but I am checking their behavior against Lucy's.

Ordinarily, peregrines stretch, yawn and sleep much as Lucy does. From what I can make out from descriptions, they tuck their heads forward under their wings rather than back over their shoulders as Lucy does when they sleep. I still haven't observed a yawn, but maybe the birdies aren't as bored as I would be. I haven't seen any sort of stretching apart from a brief double-wing stretch when one is about to fly from the roost.

One of the things I forget is that San Francisco can be pretty chilly, worse at 33 stories. Those eggs can't take much neglect. The transfer I watched happened in about 30 seconds.