By the way, In what game are you hatching? If it's on emerald, diamond or pearl, you can make eggs hatch faster with flame body and magma armor (I think).
Good luck with vulpix eggs, maybe in one or two there is a shiny.
Leaf Green. Can I still do it on there?
Actually, it won't be much help, I can't catch a Magmar in LG. And I don't know what other poke's have that ability