Peanut is a beautiful! I agree with those saying he is a male, since he appears to be a normal grey. My cockatiel is also a normal grey and I believe her to be female because she has a grey head, striped yellow feathers on her tail, and spots on her wing feathers. She is very cuddly and does not whistle very much. Peanut sounds like a lot of fun to be around with all his vocalizing!