Looking at your pictures again, it looks like only one wing is clipped? I know that there are some who feel that clipping one wing is acceptable, but in my opinion, it destabilizes the bird. You said he is attempting to fly? If he only has one good wing, he will be off balance, making it difficult for him. When he has his molt, he may regain some flight feathers in the clipped wing, balancing him somewhat.
He does look like a mischievous little devil.