I can't help you much because I haven't seen your cockatiel. But, you could easily go to the vet and have your bird sexed through a blood test. :)
It is probably a male, as the males have bright colors and is much more colorful than the female.look at his/her tale to see if there is bars across it, and if it mimics or talks its most likely a malee. but the way you described your cockatiel it sounds like a male with the yellow and red cheeks. :)
White face cockatiels
female have yellow bars under their tail (if the body is grey) albinos you cant tell w/o a DNA test
There are many different types of cockatoos.The sulphur-crested cockatoo is white with a yellow crest.The Red-tailed Black Cockatoo is black with a red tail while the Yellow-tailed Black Cockatoo is black with a yellow tail.The cockatiel is the smallest of the cockatoos, and in its natural state is essentially grey with yellow bars on its tail and red cheek patches.The galah is another small cockatoo which is pink and grey, as is the Gang-gang cockatoo.
Yellow Body and Red Cheeks before it evolves.....Thats Pichu
An orange is not yellow simply because it was orange and that is the way it was intended to be not yellow. Also, if the Orange was yellow, then it would be called a yellow. Not an Orange.
Orange-yellow (if there's more yellow), also known as golden yellow, or yellow-orange (if there's more orange).
Orange-yellow (if there's more yellow), also known as golden yellow, or yellow-orange (if there's more orange).
Orange-yellow (if there's more yellow), also known as golden yellow, or yellow-orange (if there's more orange).
yellow yellow green aqua aqua green yellow orange red red orange yellow yellow orange orange
yellow-yellow-green-teal-teal-green-yellow-orange-red-red-orange-yellow-yellow-orange-orange. you're welcomeee(:
yellow,yellow,green,teal,teal,green,yellow,orange,red,red,orange,yellow,yellow,orange,orange. It works!!!