i agree with whoever said its cause there recessive...
and the odds are 1 in 16 for a snow...

theres definately not as many available compared to ivories, bels, (i assume...)

its old info, i know that a lot more have been produced since, but...i was reading in 2003 there were only like 5 snows in the world (ralph davis website)..so by now there might be a good amount...
but the 1 in 16 odds is a killer

but its a good reason to go after this project to, i could imagine how good that would fool to hatch a snow....consider unless your really lucky itd be a few tries...