Laboratório de Tecnologia Educacional BIBLIOTECA DIGITAL               DE CIÊNCIAS

60 a 70 cm. The top of the head, the back and the wings are black and the other parts of the body are mostly grey. The immature is brown and striated. Distribution: All over the world, except from the poles and Australia. Habitat: Slow flowing rivers, lakes, reservoirs and swamps. Diet: Aquatic insects, mollusks, crustaceans, fish, amphibians and reptiles. May also eat carrion and rests of food fallen from other bird’s nests, including dead hatchlings. Reproduction: Breeds in colonies together with other species of herons. The nests are built from 1 to 7m from the ground or water. Lays two or three bluish green or buffy eggs. Natural history: During most of the day it rests...