I am completely new to having backyard chickens. Both of these "girls" were sold to me as female red sex link chicks when they were a couple weeks old. However, the person that picked them out for me was not positive she had the right ones. She was pretty sure, so we went with it. They are the same age, approximately 19ish weeks. I was having a hard time getting a good picture of the top one so I hope the tail feathers are clear enough to see. My question is, are they both really girls?