You can keep a small flock of nearly any breed in a pen that size. A word of warning from a fellow North Carolinian--line that dog kennel with 1/2" hardware wire (available at Lowe's or Home Depot--not cheap but worth every penny) from the ground up to about 2 feet (or 18 inches if the wire is cheaper at that width). Otherwise you WILL have at least one experience with a raccoon reaching through the links and eating the head off a duck--if not sooner, then later. You also need to cover the top of the pen with something--inexpensive chicken wire is fine--to prevent flying & climbing predators from breaking into the pen. I also line the bottom--under the bedding--with cheap wire (usually re-claimed from other projects or old fencing) to prevent digging predators, though I've never had evidence of digging, so I'm not sure how necessary this step is.
I have a friend with Indian Runners for sale for $5 each, many colors and both genders. He's in Locust & can deliver to Charlotte. They make decent pets, great layers. But if you want a friendly duck, you should probably go with muscovies (large, very sweet) or calls (small, not sure on personality)... Welsh harlequins are reportedly calm, and magpies are too (but hard to find). I'll have ducklings (in Charlotte) in the Spring--Runners and magpies. The mags are very pretty and would make good pets if hand-raised. I'll have blues, blacks, and silvers. You might also consider Carolina Waterfowl Rescue in Indian Trail--they nearly always have adult ducks available for adoption, and may be able to match you with some that are already tame and ready for winter.
Make sure you do your research & provide them with adequate winter shelter & plenty of GOOD quality feed.
Good luck!
