Our swedish blue is about 5 weeks old, a few weeks ago we noticed his wings looked like the one in the photo below. Now for the last week or so, his left wing is tucked in and looks normal again, but his right one is still stuck out like this. He opens both wings and flaps them with no issues, is it just growing feathers in more slowly than the other side or is something wrong? He doesn't seem bothered at all, but I'm new at this and a bit of a worry wart! Thanks in advance!