Well, I'll give you a hint.
Cockatiels have two pigments, melanin and lipochromes. Cinnamon mutation changes the expression of melanin, normally cockatiels are a dark gray color, into a brown-gray.

Cinnamon is sex-linked mutation, and as a note female birds have XY and males have XX chromosomes.

Whiteface is a recessive mutation, and means that there are no yellow or orange pigments.

Pied is also recessive, but to be split means that the bird carried one copy of this recessive gene and shows it. Maybe the bird has one light colored toenail, or maybe (like my bird) they have a small patch of white/yellow on the back of their necks.

We know that my bird is female because she doesn't have a nice, white colored head like a male white face would. She has a higher chance of being a female just because of her mutation, and she can't carry the gene the way a male could. It's the opposite of say, color blindness, which is X-linked in humans. It has everything to do with the sex chromosomes.

Cockatiel color mutations are awesome. Picture

Today at work our e-mails and website went down D: Just found out the company we use for those can't be called. 'Your call cannot be completed as dialed'.

In the meantime I've come up with an awesome adoptable site idea. Planning is fun when I'm bored ^w^

First final exam tomorrow, hope I dont mess it up.

OMG, I just won +7,000 Pokémon cards on ebay OMG OMG OMG

lol that sounds like an impressive number, congrats. Sorry guys/gals I've been sick since my finals ended, no idea why but this happened to me when I was a Freshman and Sophomore so I am will prepared. It wasnt that bad until Friday, but I wish I could get over it soon.

*test new sig*

EDIT; :O it's nice!
Already 3 new members to my website today =D

looking good pokepets:happycbig:

Thaaaanks :)
Btw, I have currently only 0.50 $ on my PayPal, I send today new money to my PP, I hope I can send you the money still this week!

Congrats Pokepets.

Thanks :P
*Working on team sig image*