Hi I'm looking into starting my own backyard flock but since I live in the suburbs and don't want to create a smelly backyard, I was thinking about getting only 2 chickens. Is that too small a flock? Also, I was reading and it seemed like everyone shuts up their chickens in the coop every night. I assume that is more for safety and security of the chickens. Is it possible to not lock them up in the coop over night and have them go out into the chicken run still? Or do they naturally go into the coop? The reason I'm asking is because I sometimes take weekend trips so am wondering how people deal with making sure their chickens are ok when you go away for a little bit. I can see how food/water work with auto waterers and feeders but not sure if I have to shut them in every night. I live in CA which doesn't have harsh weather if that is a consideration.