Little Hawk-

As long as there is plenty of food, it's unlikely that the "vicious bullying" with lead to any harm and may well improve the survival abilities of all concerned.

That's not the case with some eagles, such as the ones in Africa. The Black Eagle dominant chick for example has a reputation of bullying to death his siblings. Never a pleasant process to observe and that's why we avoid watching those web cams.

The ospreys often have three or four chicks in a nest and some of their nest bullying can be equally unpleasant to watch.

There are occasions when a chick gets kicked out of the nest by a sibling or by a parent leaving the nest in a hurry. If there are first responders around, some of those chicks have been returned to the nest or taken to a rehab center and successfully released later to the wild. At other times they are so badly injured they die or can not be released into the wild; some of those end up as educational raptors.

Charley Noble