How many chickens can I fit?

[ryanschickens1]

How many chickens can I fit in here if I let them free roam my yard all day? I can post more pictures if you need them. Thanks for your help!

 

[BantamLover21]

Just going off the photo, I would say something like 4-8. However, if you could measure the internal (boxed in portion)'s dimensions, as well as the wire run's dimensions (length and width), that would help.