Lucy has a low spell at about 4 in the afternoon. She becomes drowsy and often can hardly keep her eyes open. She will not nap, but will draw one foot up close to her breast, and go quiet and still.
When she is in this mood, I like to draw close, look into her eyes, and softly, soothingly say "Poor Lucy. She's a sleepy girl. Sleepy, sleepy Lucy." Her eyes will close, and open, close and open, and close, then she'll shake her head to rouse herself, just as a busy daddy I've heard of does in church on Sunday morning.
It's a gesture I hadn't expected from a bird.