my rhode island red roo is 3 yrs old. and since january hes been staying inside the new 10x12 coop. while the 9 hens are out roaming during the day. he just lays around in the doorway of the coop w atching the flock is he being lazy or is this a sighn of him getting old. hes a big healthy bird. the only way to get him outside is to force him out.