Hi ... I have a Black Cochin who has gone broody so I purchased some hatching eggs for her. She successfully hatched 3 Blue Wheaten Ameraucana's and 1 Welsummer. The Welsummer is a little boy but I need help sexing the Ameraucana's. Can anyone help? They are almost 7 weeks old. Chick #1 on blue towel. Chick #2 on green towel. Chick #3 on red towel. Any help is appreciated.