The website says 100 x 141, including nest boxes? Or is it 100 x 90? Either way, that's not big. My VERY rough guess is about 15 sq. ft. or 11 sq. ft., as we'd call it here in the USA, and that's about three standard birds to be comfortable.
Most coop manufacturers greatly over estimate the number of birds that will fit in their coops.
Mary
Most coop manufacturers greatly over estimate the number of birds that will fit in their coops.
Mary