What is meant by "full summed" in relation to birds?

The term "full summed" refers specifically to the point at which an adult raptor has completed its moulting process. During moulting, birds replace old feathers with new ones, which is a critical aspect of their health and functionality. This process ensures that the bird maintains its ability to fly effectively, regulate its temperature, and perform other vital functions.

Completing the moult is significant because it indicates that the bird has fully restored its plumage to optimal condition, allowing it to be at its best for hunting and other activities. This phase is distinct from other stages of a bird's life, such as fledging or growing, which involve different developmental milestones. Therefore, understanding the concept of "full summed" as it relates to adult raptors emphasizes the importance of feather maintenance and overall bird health.