You've said several times that you're not a breeder, yet you've said several times that your pen will house both males and females.
Are you planning for the rabbits to be fixed? Rabbits are hormonal little beasts and that would cut out a big part of the aggression and fighting that you've been warned about (though not all of it)
If they're not to be fixed, hate to tell you, but you're a breeder, whether you like the term or not, whether they are just pets or not. And this will have a big effect on how you have to manage your rabbits.
Nobody's trying to bash you, I admire the fact that you clearly want your rabbits to be happy. We're really just trying to help and this is essential information. If you're rabbits are not fixed, then you'll have babies. Other rabbits will kill them when they are in the teeny pink stage (not pretty!) and when they get a little older you will find that they can get out of the teeniest, tiniest openings. Chicken wire is no barrier!! Not to the 3 to 5 week old bunny.
If your rabbits are fixed, it is just a matter of having enough room, enough hiding spaces and making sure the individual rabbits will get along.
If they are not, then the only way I've found to do it is to have a (nice roomy) individual cage for the buck. Have a max of 3 does in a colony with at least 6 nesting places. The does get about 2 weeks to sort themselves out - watch for fighting. Then the buck gets to visit for 2 weeks. All the does usually get bred the first day (if they all kindle at once they are less likely to kill each other's babies) and after 2 weeks the buck goes back to his bachelor condo for a well-earned rest.
Note: you can NOT keep the bucks in their own colony and put them in and out. When a buck comes in smelling like doe they will all start ripping each other to pieces!
In about 2 more weeks the babies are born, give mommas LOTS of hay for their nests.
If you've let them burrow, expect very high losses. Domestic rabbits have been domestic long enough that while they still have the instinct to dig, they rarely make the very long, properly curved nesting burrow of a wild rabbit. You'll never know how many you lost to cave-ins and drowning
You'll see any surviving bunnies in 3 to 4 weeks. At this point you can start taking them out and now (6 weeks after his last visit) the buck can have another 2 week visit, starting the cycle again.
Taking 3 to 4 week old bunnies goes against the 8 Week Rule that we've all had beaten into our heads (actually 9 is best for puppies and 12 for kittens, cats really need their mothers) but your average rabbit is Capital D, Done with her babies at about 5 weeks. And in a colony, does don't always take kindly to another rabbit's snot-nosed little rug rats being around. Either other adult does or the buck may kill them.
Before
anyone (DaKid, not necessarily aimed at you)says
anything about this being too much work and interference because WILD rabbits blah, blah, blah, I have one thing to say to you. WILD rabbits have infinite space to get away from each other and 6 to 8 babies every 30 days, of whom approximately 5% make it to breeding age. That's 5 rabbits out of every hundred born. NOT an acceptable percentage for caring for Domestic anything.
http://www.springerlink.com/content/pwlkcl5m8ngjuer9/
quote;
Wild rabbits of the two sexes have separate linear rank orders, which are established and maintained by intensive fights.