During their last moult, there were a couple of days when Atilla would squawk very loudly at intervals. It was like she was in pain & she kept moving her wing around from the shoulder joint. I wondered if she had landed somewhere a bit funny & caught her wing.
I was quite relieved a few days after to find one of her wing feathers at the bottom of the cage with dried blood at the end of it. I am not sure what had happened with the feather, but I was glad she was rid of it. The squawking was quite upsetting at the time!