My Gouldian is turning its head and losing its balance?
This is a condition called “twirling syndrome”. The onset is sudden with conspicuous circling followed by depression and weight loss. Mortality may reach 50%. Some birds recover completely while others retain a permanent head tilt. I personally believe that in 80% of the cases it is caused by stress, be it housing, diet, mate, or enviornment. To date I have NOT nor has there ever been any known scientific proof that twirling is a genetic disorder. Read more in the article on Twirling.