We are going to pick up three 4-week old Leghorn pullets this evening. After reading a little bit about them, I've seen several comments on putting petroleum jelly on their combs in the winter. I've never done that for my black stars, frizzle banties, dominiques, australorp or austra-whites. Are there any of you out there who live in the Ogden, Utah area who have Leghorns that can share your experiences with me? Thanks.