5:32PM Lots of Flapping by One and Two. Note Two has his talons up in the air in defense. One is doing the aggressive hop hop flap offense while attempting to keep the pigeon underfoot. (Half pigeon as it turns out.) Pale Male shares out the goods.
When there are three fledglings, often the two elder have many episodes of fisticuffs initially, while Three often learns stealth and waiting while still being fed by the parents... as they all are.
Three often becomes a master of deception and sneakiness...good attributes for a hawk as well. Aggression appears eventually but in a different sequence of development.