I was told that you can sex a FCBM by the color of the comb and beak at 10 days? That the Boys will have a yellow comb and beak and the girls will be dark. Is this true????? If that is the case then I have a brooder full of boys!!! There might be some Isbars in the group since I won an auction on Rare breeds for mixed chicks. Help??? Oh and if I do have boys how long till they are big enough for freezer camp?