It's a common sight whenever we walk outside: our chickens "walking the line." Or so their behavior is now called for its resemblance to a picket line, or perhaps even prison! They all congregate at the fence and walk frantically back & forth, awaiting some hole to magically appear.
And why wouldn't they walk the line? When they're allowed out, they enjoy eating grass and they make for great little lawn mowers----heck, they even supply their own fertilizer to the lawn!
And they receive LOTS of attention from their admiring fans. Yep, a whole wondrous world can be found outside their pen.