I just got my first chickens a couple months ago. Theyre about 4 months old so they're not laying yet but im expecting them to be withing the next few months. I have a rooster so im expecting them to be fertile. Its warm where i live, usually 95-105 so will i need to incubate my eggs that i want to hatch? Why do you incubate instead of leaving them with the hens? How can i tell which are fertile and which arent? I will want to eat alot of them as well. Is there a way to tell or is it just luck of the draw?