We recently got 2 chicks (now at about 5 weeks) and purchased an off-the-shelf coop from Costco. Right now it's plenty big, but I'm concerned about when they get bigger. I saw their parents, and they were fairly large... The coop run measures 2'x6', the highest inside point is 2'6" and the highest outside point is 3'. Essential 12 sq.ft. outside and 8 sq.ft. inside. I don't know exactly what breed they are, but the owner of the parents said their mom was a 'speckled hen' and their dad was a 'rhode island red'. What does BYC think about the size of this coop? Big enough? Or not enough info to know at this point?