Welcome to the "Flock"
I tried to plan ahead with coop & pen design but even after 2 coops, I still have "improvements" in mind, so it's an ongoing project...maybe it always will be, I happen to love it all.
I have daily predators visiting. I'm on the migratory flyaway, so constant variety of Hawks. Foxes lived here way before me, this is their turf so I opted for predator proof pens & allow the foxes to be rodent patrol. They also chase off coyote. Odd how they seem to get along with neighbors cats. I see foxes, coyotes, raccoons, opossums, skunks, weasels, groundhogs, snakes, hawks, falcons & owls, (deer, squirrels & rabbits but they don't care about chickens or pigeons)...we do not have bears or gators, but some folks have caught sight of occasional cougar, pretty rare though.
Anyway, I bought rolls of hardware cloth & made 2x8 panels, also dug down 2 feet into ground then surrounded pens with stone or walkways. No one has even tried to dig in, but if they do, they won't get far.
I've had Homing Pigeons for years prior to adding chickens to the family, so I already knew about hawks & raccoons. I like having access to coop or loft without having to go through pens. I like having access to pens without having to go through coop or loft. So that's why I designed like I did.
I know people that have terrible issues with mice or rats, so I tried not to give them places to hide, such as under any structure. My buildings are all elevated on cinderblocks. I learned with sheds, if I don't elevate enough, that's when I got groundhogs & skunks, as well as rodents. I actually allow neighbors cats & the foxes to patrol the property, which I know sounds nuts, but hey it's worked well since I moved here 2007. If it ever became a problem, I'd go with voltage fencing but so far so good, we're gotten along fine, not a single casualty or even so much as a hole dug. Fox even hangs out with me, lays down by the fire pit as I burn scrap wood. I'm surrounded by acres of farmland on 3 sides, not my property, so those foxes with their dens have lived here hundreds of years. I opted for live & let live, so luckily for me, it works out well. I get a kick out of watching foxy pounce & get mice & moles, he keeps busy. Other chicken owners nearby have serious rodent issues, so my foxes are appreciated. I've seen what horrible devastation rats can do...nope never want to deal with that because once rats move in, good luck getting rid of them.
Here are some pics of coop 1 & coop 2. I've already got coop 3 planned Lol. The biggest thing is knowing what draws predators...any source of food, whether that's the livestock, their droppings, their eggs or their food. Scoop poop, Collect eggs daily, provide nest boxes inside coop, no egg laying outside. I keep food in tins inside coop, feeders are inside coop. The only food in pens is what gets eaten asap, like a suspended cabbage or bit of cantaloupe or watermelon & the rind gets picked up, not left laying there at dusk. I noticed that the people having the most issues with predators, are always throwing food on the ground everywhere.
Also, my compost heap is far from my coop, loft & house, at the furthest part of my yard behind the shop.
I'd have to say the best investment I ever made, was the hardware cloth. Keeps mice & snakes out, creates pens & covers windows & vents...best thing I ever bought.
Some pics
View attachment 3035802View attachment 3035804View attachment 3035807View attachment 3035808View attachment 3035818View attachment 3035820View attachment 3035822View attachment 3035823View attachment 3035824View attachment 3035803View attachment 3035826View attachment 3035827
View attachment 3036258