Obviously you don’t have Silkies. Silkies can’t fly so you don’t have this type of roosting issues with them. They come with their own issues. I agree to remove the ladders unless you have a reason to climb up there yourself. I don’t expect that to solve the problem but it’s a reasonable first step. You don’t know until you try, it may be enough. But many birds, including adult full-sized fowl, can fly up pretty high if they want to. If you are set on them not roosting up there, you might try attaching bird netting to the bottom of them to block access if removing the ladder doesn’t work.
I think it’s great that you have a coop big enough to give you some flexibility to do things. It’s hard to work with those tiny coops where you just can’t change anything.
I’m going to approach this from a different direction. In what ways is that poop causing you concern? You don’t have to keep the coop so clean you can eat off the floor. Some poop in there is not going to hurt anything. It’s when it starts to smell that you have a problem. As long as it is spread out enough that it dries without smelling you can go forever without cleaning. Many of us only clean once or twice a year and even then really don’t have to. As long as the coop stays dry and does not build up so thick it stays wet you don’t have a health problem.
Your nests are set up so they are not going to poop in them from the rafters. That’s good. You are feeding and watering in there, that can be a problem. But put a cover of some type over the feed and water to keep the poop from the rafters out. That may be the easiest way to solve the problem.
A bigger problem may be that you don’t have much of a run outside so they may be spending a lot of time inside so they poop a lot inside during the day. That can increase the poop load inside and make it harder to keep the coop dry and the poop to a reasonable level. You might get more benefit creating some daytime space outside more than worrying about this.
They do poop a lot at night as well as during the day but they are not moving around much at night so the poop accumulates. If you are getting piles in a specific place maybe it would be beneficial to put a bin under that roosting spot which is easy to empty. I do that on the end of my roosts that are not over my droppings board, just set a plastic bin I got from
Walmart under it. Depending in how many chickens I have roosting in there and how wet the weather is (outside humidity can keep the poop from drying out), I may need to scrape my droppings board and empty that bin once a week. Sometimes I go a month without cleaning.
Some people have the mindset that they have to clean, clean, clean. We are all different. I’m more laid back about it and mine are still tremendously healthy. I really feel clean water is important but a little dry poop isn’t a concern to me.
