Building a brooder

We are currently in the process of building a permanent brooder for small poultry.  Our immediate need is for 10 turkeys we have in a temporary brooder in the garage.  The brooder will be large enough to have the heat lamp in it for warmth and also enough room for the birds to roam around.  Additionally, it will be slightly over 6-foot tall so Dan can walk around in it without stooping.  Here are Dan and Brian mid-project....