I have a 40' x 40' A-frame flight pen. The height is 12' at the peak and 6' on the edges.
I have a 10' x 10' lean cover built in the Northwest corner. It is 12" high near the bottom and 30" high at the top of the lean. I place a lot of marsh hay and straw under the lean for inclement weather (hey it is Wisconsin after all). I actually found the plans for the pen on the internet. The website also provided the sources for the building materials (top flight netting, galvanized 1" fencing, feeders and waterers etc.). I'm sorry, I don't remember the website, but I thought it was easy to find through the search engine.

Are you raising them to be hunted or for dinner? Two different foods and pens are needed depending on this. The starting food is the same but then hunted birds are feed a "flight conditioner" food, where the dinner birds are feed a growth feed.

The pens for the dinner birds don't need to be as high. Where the hunted birds need a flight pen that should give them some space/height to excercise their wings for flushing in the field.

I will try to get some photos to post on here for you.

-Mathewsconquest2