I got my chickens from McMurray last April. One died in transit (it was flat as a pancake!), one died the 1st night, and a third got an eye infection, but she pulled through.
One cockerel (I never did figure out what breed he was, but he was gorgeous) was pretty much noticeably a male early on, two others looked as though they might be. I think that's a pretty fair number. The cockerel and suspicious ones got shipped off to a farm.
I did get several extras, all of breeds I ordered, which was great.
So far, so good. They've been healthy and lay plenty of eggs. I wasn't looking for show winners, but I think my hens are cute.