I have been reading "The Small Scale Poultry Flock" and am reading about the pens built by Don Schrider on pvs 66 & 67. The appear to be built with Priefert dog kennels. I am looking t more ics of how the half roof is attacked and if there is a cover over the entire pen. Does anyone have any better pics of pnes like those? I have searched the internet and can't find them. I hope someone can help.