We're expecting our first batch of McMurray chicks in June. We're getting 25 brown egg layers and 15 white leghorn pullets. I need to add a white leghorn cockerel to the batch. (Plus Gro-Gel after reading posts here.) Will it be obvious which are the brown egg layers and which are the leghorns? Also I need to keep the leghorn cockerel separate (he's promised to someone else). Any suggestions? Thanks!