So, Lovin, how long after my chicks are born can I tell if they are barred or not? I never had a barred chick before. I had a cuckoo pair, (Marans) . They were easy to tell because the male isn't as dark as the female. Put them side by side and it was easy to tell. But I didn't get them til they were about 2 weeks old and they had some feathers, not just fuzz then.