You don't say if it has become featherless around the neck or always been this way? Is it irratible. Some Lutino's do have a bald patch behind the crest which is normal and can be bred out. I advise you to see an Avian vet for peace of mind for yourself & possible treatment for your bird if it is needed. Good luck.
Nov 05, 2011
Cockatiel lost feathers on neck. by: Tracie
It could be a feather disease or something else. Please Find an Avian Vet to examine your bird to determine the cause and the exact treatment needed to help.