Sick Budgie-help needed
Budgie with cere problem
My budgie ( 4 years old) has some abnormal growthswelling in his left cere for about a month now. It is increasing in size. He is quite active otherwise. I've searched on the internet, but i was unable to find any information about what the problem is.
I'm attaching some pictures, please help us with the diagnosis and how we may be able to treat him