What indicates completed growth in eyases?

Completed growth in eyases is indicated by both being hard penned and full summed. "Hard penned" refers to the stage when the feathers are fully developed and the bird has transitioned from down feathers to adult feathers that are strong and ready for flight. This change signifies that the body structure is sufficiently mature for the rigors of falconry, where strength and endurance are essential.

"Full summed," on the other hand, indicates that the bird has reached its full physical size and weight, showcasing a maturity that is vital for adequate performance during the hunting and training process. Each of these indicators reflects significant developmental milestones that are crucial for the overall readiness of the eyas in falconry.

Thus, recognizing both conditions as evidence of completed growth ensures that the falconer can assess the readiness and maturity of the bird effectively, allowing for more responsible training and handling.