Chickens are super cool animals. They are evolved velociraptors. Chickens take 3 weeks (21 days) to hatch. In order to hatch chickens correctly, you have to make sure the temp is 99.5-101.5 and 55-65% humidity. Sexing baby chicks isn't easy, because chickens don't actually have a "penis". When a rooster mates with a hen, he mounts her and, standing on her back, lowers his cloaca (vent) and the hen inverts her own cloaca to meet with his. There is no penetration, but the sperm packet released by the male is taken into the hen's cloaca or vent. A lot of English sayings come from chickens... "Cocky" "pecking order" "mad as a wet hen" and more. Chickens are fascinating! They will eat mice and some small snakes. Hens can lay an egg even without a rooster being present. They are great for pest control! Chicken eggs come in a variety of colors, including copper (copper maran), blue (Americuana), green (Easter eggers) varieties of brown, and white. There are a lot of different chicken breeds for many purposes. Layers lay lots of eggs, meat birds for meat, and game birds were really bred for fighting. Chickens are cool.