You can have two but they work better in a flock of 5 or more, they can protect themselves better against predators there is strength in numbers. You might want to find out if you are allowed to have livestock were you live since you are in SD. Remember they are very chatty and will announce when there is a predator or if they see someone or something they feel threatened by.![]()
I wouldn't even say 5. Once I got down to 11, I had a day where I lost 3 via getting picked off one by one. Honestly, I'd say at least 10 if you want them to act as a flock and be effective. That's my two cents at least.