See, chickens can't fly. They'll all have to think of some other means of flying the coop, as it were. Immediately the chicks of Stalag 17 are smitten with the cock. Ginger wants him to teach her feathers in arms to fly the coop. So begins some exercises, and enjoyable parts.
Chicken run is decidedly British.
Americans are always being late for a war. Hmm, makes you forget for a nanosecond your in 2000. No, just a ribbing. The animators do, however take a liberty in regards to their countries warranted stereotype. The chickens all have pearly white Tom Cruise teeth.