Why is cockatiel holding head sideways and falling off perches?

A cockatiel holding its head sideways and falling off perches may be experiencing health issues such as neurological problems, inner ear infections, or other medical conditions. These symptoms can indicate stress, injury, or illness, which may require immediate veterinary attention. It's crucial to monitor the bird closely and consult an avian vet for a proper diagnosis and treatment. Prompt intervention can help ensure the well-being of your cockatiel.