In a small area in Mecklenburg-Vorpommern live the only colony of wild greater rhea in Europe. Twenty years ago, the ancestors of this ostrich-like birds from South America broke out from an enclosure in Northern Germany. Since then, they have been multiplying undisturbed. Farmers complain about crop losses, and conservationists suspect an impact on rare insects. A team of researchers is on the trail of the largest birds in Europe and examines how these unusual birds have an impact on nature and agriculture.