Hello, I got my first chicks a month ago today. 2 will be six weeks on Wed, 1 will be six weeks on Thursday, and 1 will be 5 weeks on Friday. I originally got two from the local feed store but decided I needed two more. The dates of birth were estimated by the salesman who said they receive shipments on Fridays and some chicks are a week old while others are only a day old. He helped us guestimate the ages based on the sizes of the chicks wings and the presence of egg teeth. I used the backyard chickens site to figure out the appropriate husbandry and to obsess about my chicks. Charmin (EE): My youngest chick had a case of pasty butt which we noticed as soon as we brought her home. I used warm water to fix her but she had the problem again the next day. I used the advice from backyard chicken to "cure" her (peroxide, vasoline, and oatmeal). After the ordeal her name became "Charmin." Lucy (Red Sex-link): The first one I picked out. She is mostly red with some white feathering. I called her Lucy because she chirped ever so loudly, reminding me of Lucille ball. Ravyn (Black Sex-link): She is beautiful and black. Her middle toes are yellow while the others are black. She has one white feather at the tip of each wing that you only see when her wings are spread out. She also has a white dot next to each eye. She has recently been developing some pretty brown feathers around her neck. Pebbles (BR or similar): She is probably a he. I will add a pic and you tell me what you think! This pic is at approx. 4.5 weeks for both chicks (they are same age).