I have 3 chickens. They are different age when i got them. I have a white/yellow one that is the oldest one, i forgot what kind of breed, but im told she can lay blue eggs. She is about maybe 2 or 3 months old, kind of the size of african grey parrot. The other 2 are the same breed, brown and lay brown eggs i think. They are about few weeks younger then the yellow one. Though one of the brown one is a week younger then her sister.
Since i live in the suburb in the City, the backyard isnt huge, maybe medium size, with my parents plants and flowers everywhere. Plus i cant touch those. So the hens will have enough to run around in a small backyard.
The weather i live in is mostly foggy since it is california, san francisco. the winter here doesnt snow at all. It might frost a little in winter but not much. Weather have been weird so, we get some sunshine but not often, mostly grey skies.
So what does a chicken need inside their coop??
I know they will get their exercise cuz i Had 2 roosters, they got very huge! BUt now i have chickens, Though these chickens are more spoiled then my roosters. bACK then my rooster live in a small box at night when i bring them back inside the house. Then in the morning i bring them back outside for some whole day of sunshine, then catch them back inside the box at night.
Plus we get cats, owls, raccoons, skunks and small hawks near the backyard looking for food.