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Harpy eagle hippogryphs grow up quickly, in no small part due to the extensive care they receive from their parents and the other hippogryphs in their rookery. During most years, these hippogryphs are solitary or live only with their chosen mate, but every few years, a large group of five to fifteen related creatures will gather at a traditional nesting site and lay their eggs in a single nest. The adult males take turns incubating the eggs while the females guard the nest and hunt. When the eggs hatch, they all receive attentive care from their parents and the other eagle hippogryphs in the rookery. In the following weeks, they are out of the nest and exploring on their own or play-fighting with each other; a few months later, they are being taught to hunt and fly by their parents. Within a year after they hatch, the youngsters are on their own and large enough to care for themselves. It may take several years for the newly-fledged juveniles to find a suitable partner, and when they do, they will return to the nest site and begin their own families.