I got these buff's in April of this year, we asked for all hens but it's obvious by the crowing in the morning that we have a rooster, at least one. When we try to tell gender it goes above our heads since this is our first time raising chickens. We tried to get all 7 in each picture but it wasn't easy. Please help if you can, we just need to know how many chickens and how many roosters and how the heck you can tell the difference. Thank you!