Greylag geese are gregarious birds and form flocks. Protection of herds, flocks and crops from diseases, pests and predators were his primary duties. Chickens are gregarious birds and live together in flocks. These herd places were collective pasturelands for flocks of sheep. He seems to represent the sun as a guardian of flocks and herds. Some large commercial breeding flocks were reared on pasture into the 1950s. Soon, massive flocks of birds attack. Beeches and oaks produced the mast needed to support nesting and roosting flocks. Less often shepherds lived in covered wagons that traveled with their flocks. The shepherds gather around an altar and pray to Pan, god of shepherds and flocks. In mixed flocks these ibises often hybridise. Llamas were used as pack animals in large flocks. Cedar waxwings are sociable, seen in flocks year round. Toucans are usually found in pairs or small flocks. These flocks will occupy and defend territories against neighbouring flocks.