They need to be able to reach it. I stagger mine about 18 inches a part starting at about 18 inches off the ground all the way up to about 5.5 feet. If you have lighter breeds that can fly, you can get away with more distance, but heavy breeds should not have to hop up or down more than a couple of feet. They will always roost on the highest location, so be sure your highest roost is above your nest boxes.
UGCM
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