I don’t have a “coop and run”. When I was thinking about housing one of my concerns was dealing with snow load (our ave 120” a year)from November-April. A traditional run setup wouldn’t work for me for our long winters. So I wanted something that would give a dry draft free home in winter but lots of fresh air and sunshine in spring,summer and fall. They get yard time for grass and bugs when we actually have those (4-5 hrs a day and all day on weekends) This works for me and my Silkies. It is 28’x8’ I have 15 adult Silkies, 5 2 month old Silkie chicks and 4 Seramas not sure how much SQ per chicken to figure (do Seramas and chicks count)The one thing I will definitely not do next year is go into winter with late summer Silkie grow outs because right now I have 4 cockerels ( about 5-6 months old) just now able to sex and coming of age and 2 roosters. I have been shoveling an area for the boys to spend time outside to give the girls a break during the day.