Today my male Budgie flew out of his cage and downstairs. Every so often he'll do this just to explore downstairs and then makes his way back upstairs. But when he flew down today and I wen to help him back upstairs he was acting really weird. He's not completely trained but he'll hop onto my finger for some treats but after he flew downstairs he acted like a completely trained bird! He let me pick him up and would let me pet him and would not move off of my finger. He wouldn't go into his cage and I literally had to pry him off of my hand. He was gripping my finger so hard with his feet that it was hurting a bit. Im worried because he has never ever acted like this even when he's flown around and bumped his head. He's just siting in his cage and won't move from his spot. Does he have a concussion? Is he just in shock? Will he be ok?