Our budgie (Leo) is approx. 5mths old. We are unsure about his gender. His cere is a purpleish colour with a light blue tinge around his nostrils. Also lately he has been making a screaching noise whenever we want to hold him or get him out of the cage. If leo is a girl can she learn how todo tricks or anything of that sort. I am 12 years old and has done lots of reasearch on budgies but cant find out about these things. Any help would be fantastic! Thanks.