The Great skua takes a long time in growing up. Only at the age of four it is time to reproduce. A Great skua may choose a larg colony - or, like in this case, an isolated island. The nest is placed directly on the ground and consists of a small pit, lined with grass or other vegetable fibers. The litter consists of two spotted, olive-brown eggs and the parents take turns in brooding. Just like other skuas, the Great skua defends its nest by attacking the head of potential intruders.