I have a GCC who is 4 years old, every fall his feathers fall out on his head and he gets black spots on his side wing feathers. I'm not talking a few fethers falling out either,He is extremely bald. It starts around mid August, and continues gradually filling back in right around christmas.
I have taken him to an avian vet, and he recommended a food supplement that I sprinkle on his pellets, but Oz still goes bald for a little while every year. Any suggestions or comments would be greatly apprecited.