Hello- I will be having new Chicks on Sunday they have been in an Incubator for the past 17 days- I have ordered a Brooder- I have a Few question? 1. What type of Feed should I use for the New Chicks? 2. I have also read that new Chicks need Vaccination? The eggs come from Chickens that we have on our Farm that we were given from a Friend. Assorted types-How will I know which chicks need vaccines? or when do I give the vaccine? Where do you purchase the Vaccine? 3. At what age do you put the chicks with the older chicks? Thank you so much for your help.