Thanks for the info. Here's a little more about what's going on..
Due to our weather, we usually raise chicks in the spring (usually available about March) and butcher in the fall when it gets cold (Oct) then repeat the next spring
Our biggest threat are the huge aggressive ravens here and young birds are at major risk. My fence, fat dog, traps and rifle seem have resolved our other routine predator problems (Have a big fenced pen 100x 400 and 2 - 50x50 pens sharing a 2 stall coop with a smaller attached enclosed run , all surrounded with 6' fencing that is skirted but too big to net) Normally as the chicks are growing I put them in a 4X6X5 mobile coop, after the brooder, so I can roll them out on nice days and back into the garage at night then I transfer them to a securable coop all based on their size and breed.
My somewhat flighty Leghorn rooster "Mongo" was gotten at 9 months old and has only been around turkey chicks, that I know of, which he has basically ignored due to his hens being around and dealing with ravens. After the initial welcome-to-the-coop butt kicking he recieved from my 6 RIR fully grown hens, that I was lucky enough to get this spring, he has been attentive and protective of them. My plan is he will be spending his winter in the garage, in the mobile coop or a 3X3X6 ferret cage I recently picked up, so he will be big enough and smart enough to protect the little birds. I like the idea of setting his cage in or near the chicks while they are in the mobile and fixed coops to let him get familiar with the other birds and to gauge his reaction.
There has been mention of disease risk, what could be passed?
Any other issues I need to consider before going with this plan? I know ther are folks out there who've forgotten more about chickens than I'll ever know,
and I'm open to all suggestions.