Wrangler has been making amazing progress over the last 8 weeks. He's grown in a lot of feathers and is more green than grey these days. Not a full secondary feather coat, but a decent covering. That was until today. I got home from work and found nearly a dozen of his new feathers scattered on the bottom of the cage. I am crushed! there are obvious newly revealed grey patches of down feathers on his right wing and between his shoulders. He has a new wood chew toy in his cage but it's untouched...I do everything I can to give him distractions and toys---he even figured out his first multi level foraging toy. Any thoughts or suggestions?