Why is my cockatiel lethargic, puffed up, sleeping, and aggressive?
Behavioral changes and sitting fluffed up/lethargic on the bottom of the cage can both indicate there is something going on that is making George feel unwell. As these are very vague signs of illness, it would be best to try and bring him to a vet ASAP for care. Illness, injury, disease, parasites, malnutrition, etc can all cause these symptoms, so having an exam to rule out more serious problems and get George started on treatment is best.
If he is untame/wild and can't be handled, you can try tossing a towel or bird net over him gently to be able to catch him and place him in a travel carrier to get to the vet. Keeping the carrier covered with a towel or sheet can also help reduce stress and keep him calm on the journey.
Updated on September 23rd, 2025