I know I've heard you can house chickens and guineas in one pen, and I could go that direction, but I was thinking of adding a pen this summer to raise turkeys (if I can stay away from my computer long enough to build a coop!) and I'd really like to try guineas too. I have a neighbor who I'm sure will let me have some eggs (though I'm totally tempted to try blue or purple varieties, I probably ought to start with free eggs. lol) I've done lots of research on them, I just have to decide on housing, and if I really want to add yet another pen of bird to my 45-minute (minimum) morning animal tending routine. (and then there's the evening one, lol).