on our receid from the petstore, they say it's a rare keet.
does anyone know, what this means?

marion

what does the keet look like?

it is the blue one on the picture

Yeah because they are a rare mutation. They are just like the albino's . Not many of them ! Hard to find.
I don't know if this will help but, here is a link that might help you understand their genetics.
http://www.geocities.com/budgie-place/gen_recpied.html
I hope i helped a litte! I don't know much on the subject but a little. Any other question you might have you should talk to Jloc! He is pretty good on this matter and he is the one that tought me the little I know.
Good luck!

nothing seems rare.. maybe because its blue not green, the most common color of keets...

he's blue and turqois and has a yellow head

Yes that actually is rare coloring.. my Shadow was a rare parakeet also.. you cannot not tell well from the picture but she is this dark sky blue, white, gray, and then has purple cheecks and a light purple shadow on the back of her head... I have seen her coloring before but like they said it has to do with genetics.. Both of your birds however are beautiful !..

like my sarah and sauron are rare keets?

well..i know for a fact that sauron is..ive never seen another bird like him

Cully is also called "rare". I'm trying to remember what someone said about that... but I also think it has to do with being a recessive pied.