Hawks regurgitate pellets primarily for what reason?

Hawks regurgitate pellets primarily as a means to expel indigestible parts of their food. When hawks consume prey, they ingest not only the digestible portions but also parts that their bodies cannot process, such as bones, fur, and feathers. The digestive system of a hawk is designed to break down the soft tissues of their prey, but these hard, indigestible materials remain intact. To avoid clogging their digestive tract and to maintain overall health, hawks form these indigestible remnants into pellets and subsequently expel them. This behavior is a natural part of their digestive process and essential for their well-being, as it allows them to efficiently process and assimilate the nutrients from their food while managing the waste.