I planned on 4 chickens. I built a non-movable A-Frame "tractor" style coop suitable for 6 - 8, according to the plans I semi-followed.
Bought 4 chicks. 1 "failed to thrive" and I replaced it with 2 more chicks. "Just in case." Hmm, I went to five, there; my coop should hold six easily. Bought, well, 2, because buying one chick to take home in a bag was so sad for that 30 minute drive. And I couldn't decide between BO and SLW. So I got 'em both. That made 7.
Then my expletive-deleted, elderly dachshund killed one at 5 wks. Down to the "should be okay" six. When he killed a second chicken a week later, I was broken-hearted, so I bought ... you guessed it, THREE more chicks. What if one turns out to be a rooster and I have to take it back? (The feed store said they'd take it back and even replace it with a new chick. But I thought I'd be... ummmm..... proactive and ahead of the game.)
At least that's how I remember arriving at my current 8 chickens. Who would NOT go up the ramp into the coop. (That was okay at that stage, because I still put 'em back in the brooder in the bathroom at night, anyway... but I worried about that ramp and chickens refusing to go up it once they were out there 24/7.)
And then I saw a really good deal for coop kit on
eBay, and it promised to hold "up to 10 chickens" and it only needed a screwdriver and a rubber mallet to put it AND its attachable, covered run, together. Only 4 inches above ground level, really short pop door and ramp. So I bought it and put it together.
Nifty. But then I needed more space because the two coops, set up side by side, took up most of the fenced in run I'd set up. But the 8 chickens were sleeping in the
eBay coop at night, by then.
So I turned more of my large backyard into a chicken run. Moved the
eBay coop closer to the house, so I could be more aware of night time predators scoping it out.
During the daylight hours on weekends, the chickens have the whole area to roam, between and around the two coops. They like going in under the A-Frame, and I DID see one chicken go halfway up the ramp inside it, but not all the way to the top. I shoo 'em all back to the shorter,
eBay coop at night.
So you see, I have this second coop (built by myself, first) all ready for more chickens. Chickens that might know how to go up ramps....
In the spring, I'm gonna get more chicks. I can separate the newly-fenced, larger run area into two halves, for... safety, I guess, so the older chickens don't do something bad to the new chicks... something like that.... must read up more on BYC......