First timer here! Just brought home 6 Orpington chicks from TSC. The bad news is that they did not come sorted - hopefully I don't have 5 roosters! Within the first hour, 5 of the 6 were eating and 3 drank. They all stretched out and started snoozing near, but not directly under, the heat lamp, so I'm feeling pretty good about the temperature. I also have some Brahmas on order, but they aren't going to arrive for another month. When will I be able to tell which of my Orpingtons are male and which are female?