Mainly after sex I'm thinking young female? And mutation

 

Not good on mutations but I would say male, cere looks pink. If it was female the cere would be white.

 

Thanks

Far out! Caught out again. Was ment to get 3 female and 2 male off a breeder last week but ended up with 3 male & 2 female. Got this one today to make up numbers as a female but if your right then now I have another male

Looks like you're not having much luck. When looking at babies, males will have a pink cere and females will have more of a white. If it isn't fully pink it probably isn't a male.

Male. Dark green pied.

I'm leaning to male also, and a very nice bird it is.

I'd say male too.

 

mutation: dark green pied (does he have a yellow spot on the back of his head?)

 

Probably a clearflight pied because he doesn't have any pied chest/body markings. It looks to only be his wings which are affected indicating clearflight pied. I could be wrong though!

I'd say male. Dark green clearflight pied.