Struggling to fly after not being let out of the cage for 3 weeks.
I recently left my 7 year old African Grey ‘Billy’ at my moms house while I was away for 3 weeks. He was in the correct cage but during this period was not let out to fly. When I returned he did not step up straight away instead he climbed around the cage in circles, I felt he was a little nervous/ unsure about coming to me. ( but I took this as a little mood he was in because I left him) His daily home routine is that he is normally out of his cage during the day unless I am at work. Billy is a cheeky mischievous bird, who always flys to me when I have food, he can also be naughty and defiant at times, however, I have brought him home and noticed he is struggling to fly, he is stretching his wings a lot but when he tries to fly, he falls to the floor. I think he is a little on the quiet side but know he is also happy to be home as he is being very loving. He has no problems with his climbing net above his cage and he is letting me check his wingspan, (with a little bit of attitude) however, I do not know what I am checking for and normally he does not let me check without biting hard.
I am worried my bird is sick or could it be that he hasn’t been let out to fly for a few weeks. I’m also not sure if it’s relevant but worry that my mam used to house budgies in the same cage 3 weeks prior to billy staying.