Black - boy has spot on head, girl has no spot.
Red - this depends a lot on the cross. Boys are white at hatch and girls are cinnamon colored BUT how white and how "red" depends on what cross you make. Some only have their cheeks that color... it's weird.
My Cl x RIW are that way. the differences at hatch are not so clear(but there is subtle differences) but just a few weeks in when the feathers start to come in you will see pure white boys and the girls start to become a chamois color like amber links. so technically they would be sexable a few weeks in. which is still nice that its not months.
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