What have I learned from watching the peregrine nest box?
1) There are two parents who share responsibilities, from sitting the eggs to feeding the young.
2) The oldest hatchling will be dominant, demanding the most food, and will defend its siblings. (I might be totally wrong here.)
3) Peregrine siblings comfort and teach one another. The one who lay with the baby got up and demonstrated those lovely wings, and convinced the baby that it was okay to leave the nest.
Do I have anthropomorphic vision? Probably, but I can't deny what I saw.