depending on their breed,size, and other things, it will be plenty of room. i made this for my 3 hens, it may only have to. its made out of 2x4s ply wood and chicken wire ( some places) put rat wire over windows. i know a lot about chickens and im 13 and people at school ( friends ) call me chicken boy. so try to make fun but i dont mind. i have a dominique, kuku maran, and an easter egger. i have had many types of chickens, but the top number i can have is 3( my brother also keeps 3, its a rule we cant have more) *bantam ( very small breed) needs square 1-2 feet * * light breed needs square 2-3 feet* and last , heavy breeds need 3-4 square feet. ( IM PRETTY SURE THIS IS FOR COOP BUT YOU COULD USE THIS FOR PEN AND COOP UNTIL YOU GET INTO HIGHER NUMBERS OF CHICKENS FOR PEN) say u had 6 light breed hens (middle sized hens), well 4 times 8 = 32 square feet i think so 2-3 x 6 ( aim for three!) so 3x6= 18 so then 36 - 18 = 18 so u could put 12 light breed hens in a 4 feet by 8 feet ( SO BY CHOOSING 6 HENS, YOU MADE A GOOD CHOICE) JUST REMEMBER FOOD, ROOSTING SPACE, NESTING SPACE, WATER, AND OVERALL SPACE. 1 nesting box is good for 5 hens, u should have 2, go to
amazon and look, there plywood looking and have triangle sides with handle on top. there hard to explain. there about 10, go fancy or plain, either way you need two nesting boxes. put hay in them, but straws best i guess. keep a FAKE egg in it though one hen learns something , the others will learn by doing trust me they cant count. they lay in darkest place and other things naturally. pretty much there standing there then BOOM they need to lay an egg theyu dont know so they go to dark spot, lay it, already egg there? even better,they favor that spot oftenly. also the collect eggs ( clutch) when there broody and set on them. you cant make them broody but ive had a few go broody when they saw a egg in a box and set on it but if its set on it, it wont stay long usually if it dfoes when they dont hatch at around 21 days like they should, itll give up. DONT WORRY. also if it stay on fake eggs long time because its broody u can put chicks in nest when it gets up to eat or something and it should think they just hatched AND its the mother. if u just put chicks in there randomly and its not broody, it might not raise them and it might even harm or kill them. sorry this is so long and you probably know most of this but i know im telling you this stuff late but i hope ive helped you.