I 'adopted' a 3 week old welsh who is now 7 weeks old. I loved him so much I got 4 more brand new babies! They are a week old now and doing great! I have read that you can tell the sex when they are little by the head and beak color. I have two with dark heads and two with light and two with dark beaks and two with light. The problem being that one has a dark head and light beak and another has a light head and dark beak. So which is the mist likely trait to tell the sex? The head color or the beak? Thanks!!