well there is thin person selling emu chicks in my area and i was wondering if they would need heat during cold months as adults, i know the need heat when they are chicks but what about as adults it gets like -30 C here so its pretty cold. and what about food whats a good brand or mix? what size coop would they need for the colder months? we have a shed that's empty and we can hook up a few brooder lamps? and anything else i should know?