On Kamchatka, aggregations of as many as 700 eagles have been reported, though much smaller groups are the norm. In summer, live fish, typically in the range of in length, are fed to the young at the nest. Normally, the parents catch about two or three fish for the young to eat each day. In autumn, when many salmon die after spawning, dead fish tend to be consumed more often than live ones, and these are the main food for Steller's sea eagles that overwinter in inland rivers with unfrozen waters.