All of the prefab coops I have ever seen, vastly over estimates the number of birds that fit into that size of coop, so I would say, take your tape measure. The coop (or house part) with roosts should be bigger than 4x5 feet, and a lot of people will tell you 4 x 8.
The run (yard part) should be about 8 x 10.
I will bet it is nowhere close. However, some birds can make it work. So as to the birds:
- do not take them if you feel sorry for them - just a train wreck.
- should have bright eyes, and should be active, moving briskly, curious and paying attention that you are there.
- healthy tends to look healthy, bright feathers, (however, if they are living in too tight of quarters, could be a bit ruffled up
- no sneezing, or coughing
- look closely at their legs, - should be tight skinned, ruffled or rough looking could be a sign of mites
Now I am pretty positive that he has too many chickens for his set up. However, if you are handy or have another shed, you could maybe make this work. Or if you put out some feelers, often times you should be able to sell some of the birds, so that the ones you keep will fit better in the coop.
Good luck, it is a marvelous hobby, and a great deal of fun.
Mrs K