I purchased 3 bantams from Tractor Supply and were told they were "about 1 week old". During the first week I got curious as to what type of bantam they could be and quickly figured out they were silkies based on their black skin, feathers down their legs, and 5 toes as opposed to the typical 4. Then I got curious as to their sex as my sister-in-law is interested in a female if we ended up with any. I did a lot of research on the subject and found they are one of the most difficult breeds to sex until they either start laying eggs or crowing. Based on my research and observation, I have my suspicions on their sexes but I'd like to get others' opinions as well. Here are some pics to help. Sorry about the red lighting. They're still in the brooder box.