Hi! I recently got an order of all female chicks from MPC and 4 straight run silkies from tractor supply. This is my 3rd MPC order and one of every 3 chicks I get usually tends to be a rooster even when I order all females. It is kind of disappointing, but I love all of my chickens from them. I tried feather sexing and noticed that one of my chicks feathers was much shorter than the other ones. I recently found out about tail sexing. They are exactly a week old today and some of them are growing tail feathers while others are not. Is this an accurate way of sexing? Thanks so much for any help!