ok I asked this over in breed identification too.. I have tanishyyellow chicks and yellow chicks. Which is isa brown and which is buff orpingtons? They are a week old and getting feathers in on their wings. The tanishyyellow has buff colored feathers and the yellow ones have white! This is all too confusing. Another person said her brown/red chicken came from a yellow chick. How much do they change before they grow up and when will I know for sure??