Hi, we have 6 chickens that were a straight run and need some help sexing them. I am guessing that 3 are males based on the following: combs are developing faster than others, more aggressive behavior and leaders of the flock. I have read several books and read that you can tell my their hackle feathers and whether they are pointed or rounded. They all look the same to me, they all look rounded. I believe my chickens are Rhode Island Reds, maybe one is a Leghorn (white one) and a Black Bantam. If you can help me determine what type of chickens they are and what sex they are I would really appreciate it!!! My husband said he thought he heard one trying to crow last night. THANK YOU! I will try to post some pics.