Mom left the chick alone for a little while in the evening.
A slight wing coordination problem:
Mom came back with some food, and the chick ate as if he hadn't eaten for days.
Immediately after the meal, Mom decided it was bedtime. She didn't take the remaining piece of food out of the nest, which surprised me, but a minute later she ate it.
The chick had other ideas about bedtime:
Mom had the last word: