However murry mcmurray does one thing i disagree with. They always add a few extra birds to your order which is nice i guess unless someone does not want them or have the means to raise them.
I think when it comes to live animals you should get exactly what you order. Adding extra chicks may not be in the plans of the person ordering them.
Generally this is done in case of chick death. You order 10, they ship 12, and if 2die, you still have 10, but might have 12. Also, they will extra for the warmth. This year, I ordered 25 chicks, I got 28. Then 3 died the first week, so I still had my 25!