I think it looks a bit tight for 10 birds too. Are they all bantams except for one?
They're only 8 months old so they're still getting bigger, at least bigger than they used to be in the old coop. Generally, each bird needs 12 linear inches on a roost, so hopefully your roosts are about 5' each. And it does take quite a bit of space to flap their wings and hop up there to get settled, and just as much room to jump down, maybe they feel crowded?
You could try lowering the roosts to be level with the perch on the nest boxes. That could make them more accessible. I would also attach a low board across the door opening and fill the floor with about an inch of Sweet PDZ so the poop is easy to scoop out (like cat litter). Will also help keep down the ammonia fumes, especially with that many chickens.
They're only 8 months old so they're still getting bigger, at least bigger than they used to be in the old coop. Generally, each bird needs 12 linear inches on a roost, so hopefully your roosts are about 5' each. And it does take quite a bit of space to flap their wings and hop up there to get settled, and just as much room to jump down, maybe they feel crowded?
You could try lowering the roosts to be level with the perch on the nest boxes. That could make them more accessible. I would also attach a low board across the door opening and fill the floor with about an inch of Sweet PDZ so the poop is easy to scoop out (like cat litter). Will also help keep down the ammonia fumes, especially with that many chickens.