The chick in the top pic Jackie (black mixed color) was born on 7/7/16, so almost 4 weeks old. The two chicks in the bottom pic were born on 7/8/16. (Phoebe white chick and Dixie brown chick.) They all are almost 4 weeks old. Can anyone shed light on breed and hen vs. rooster? They have female names, but I realize I may have some roos. Thank you for any help you all may have on this topic.