The Gray Heron is a large bird that is widely distributed throughout central Europe. Its length is 90 cm and its wingspan can reach 170 cm. It weighs about 2 kg. It has long legs and neck and a dagger-shaped beak. Its plumage is composed of colors from white to black, passing through various shades of gray, with more marked contrasts in adults. Both at rest and in flight keeps the neck folded. It is partly a migrant and its migration area ranges from the Scandinavian countries to North Africa. It is a very adaptable bird. It feeds on fish, both in streams and on the coast. It also sometimes takes advantage of pests of rodents or locusts, which can take the heron to places without water. It carries out reproduction in colonies, nesting in trees and reedbeds; in this way they are protected in the safety of the crowd. However, the rest of the time it is a solitary bird. The laying, from 3 to 5 eggs, is in March, and is performed after a series of ritual movements to attract mate to the nest. After 26 or 27 days the chickens are born, which will remain in the nest for 6 or 7 weeks.