mutation and genetic

[Dwai2764]

http://img228.imageshack.us/img228/6728/dscn5572jf8.jp/
hello irn lover s
can someone give me the name of that mutation and it's genetic chart (i have searched for long but in vain )!!
please help me [http://img822.imageshack.us/img822/4811/dscn5557vc4.jpg]

[dog_glenn123]

Hi there they are called blackhead mutation but i cant give you any details on the mutation and how it works as not many people have them and i have no details on the way the mutation works.

Now the two that are there are infact not a black head mutation and its infact caused by lack of light in there housing, once those birds where put back into proper lighting the black head goes away.


But the left one was blue bird and the right one was greygreen.

Thanks Glenn

[Dwai2764]

thxx