I am recognizing, that many people, feel in favor, of leaving their birds, "full flighted!" I choose not to do so, for Sophie. It is a matter of "what she enjoys to do!" She prefers gardening, walking with me. Kiki on the other hand, Loves to fly, so she tends to be full flighted, but gets "mad", that she can't go out and garden, etc. Any bird with "behavior issues", will tend to do better trimmed, from the start. Eventually, you must choose what works for them! Nancy M