I'm thinking about ordering from them and as I know a lot of you have ordered from McMurray , I was wondering if they put extra chicks in the box. If I'm getting 30 or so, would they put in any extras? And do they just put in extra cockerels or do they put in a few additional birds of the breeds you chose (I think I've seen one other hatchery that did that)? Oh - and I'd probably be ordering for July, if that would make a difference (heat-wise). Thanks!