I have a 7-year-old cockatiel who seems to be in perfect health, but lately her wings fail her. She doesn't fan or open them, and she will fall to the bottom of her cage during the middle off the night. She holds her wings low away from her body, in a very droopy way. She no longer attempts to fly.
Otherwise she seems fine. No sneezing, wheezing, or changes in her diet.
Is there something I can do for my poor bird?