I visited this rookery at the height of the breeding season. In this family portrait, I place a bull at the center, controlling its territory in the rookery. Females give birth soon after arriving at the rookery, and they will breed here one to two weeks after giving birth. The pups in this picture are about a month old – the result of the previous year’s breeding season. This bull controls this territory for two months. Stellar sea lion bulls, which can weigh more than 2,000 pounds, do not coerce females into harems. Instead they control specific territories among which females freely move about.