I last week obtained some chicks from Tractor Supply, they had pullets in one tub, there weren' sure what breed and RIR straight run, bantam assortment ,straight run , cornish , straight run, i ask same questions as you , there weren't sure about vaccines, but was told Tractor Supply has there own hatchery....possibly that was made up also, so unfortunately i have no idea either, but i brought home some bantam assortment , can't wait to see what they grow up to be......