I am learning lots thanks to all of you! My husband stopped by the feed store and picked us up 2 barred rock, and 2 silver laced wyandotte. We want eggs and had previously bought 8 straight run from a different feed store. He wanted to make sure we would have some hens. The store only sells female unless it is Easter. At such a young age how do they know for sure that it is a female? And what do they do with all the roosters?