I know you should give your birds 3 to 4 feet each inside. Let's just say 4 square feet each. I'm planning a dropping pit for easy cleaning. Since I'm in the process of planning my coop I'd like to know is that 4 square feet floor space or total space? For example. Say I'm planning a 10x 10 coop with a droppings pit that will me 4 x 10 so we have only 60 square feet floor space (100-40=60). can I put 25 birds in the 10x10 coop or do I need to adjust for the reduced floor space and only have 15 birds (15x4=60) Over thinking the details is how I roll.