Interesting question. Try to think about it like a chicken would.
Chickens descend from jungle fowl, so try to make the environment in your pen like a jungle. As ground birds, though, chickens wouldn't be likely to appreciate the same kind of environmental enrichment that parrots would.
One problem with chicken runs is that they tend to be just blank, open space. Try to add some vertical objects that make the space more complex: bushes or shrubs in pots so you can swap them out when they get pecked to death, branches, logs, even old cardboard boxes. Give your chickens places to hide behind so if someone is getting picked on, she can escape.
Chickens descend from jungle fowl, so try to make the environment in your pen like a jungle. As ground birds, though, chickens wouldn't be likely to appreciate the same kind of environmental enrichment that parrots would.
One problem with chicken runs is that they tend to be just blank, open space. Try to add some vertical objects that make the space more complex: bushes or shrubs in pots so you can swap them out when they get pecked to death, branches, logs, even old cardboard boxes. Give your chickens places to hide behind so if someone is getting picked on, she can escape.
