downfeathers

My cockatiel lately has been picking at and chewing and swallowing his powder down feathers on the sides of his back, kinda below his wings. He chews on them, makes them into a fine powder, and then swallows them. Is this normal? Is this due to stress? Or lack of protein or calcium? He does...

My green cheek conure on the right has lost adult feathers like the left conure has and only has down feathers remaining; I just noticed this and do not know if this is normal for this kind of bird? I dont remember this happening with the other bird.