I bought some eggs for a broody hen as I have no roos. they were all blue eggs. 5 of the 6 hatched. All the chicks have 5 toes. I was told they are 1/2 Ameracauna and 1/2 Dorking. They are almost 8 weeks old. I have no idea how to determine if they are roos or hens - these are my first babies. Any ideas?