The Birds of the Yasuni

The herons are the long-legged freshwater and coastal birds in the family Ardeidae, with 64 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genera Botaurus and Ixobrychus are referred to as bitterns, and, together with the zigzag heron or zigzag bittern in the monotypic genus Zebrilus, form a monophyletic group within the Ardeidae. Egrets are not a biologically distinct group from the herons, and tend to less ↑

The cocoi heron (Ardea cocoi) is a species of heron in the family Ardeidae. It is common and widespread throughout most of South America including Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, French Guiana, Guyana, Panama, Paraguay, Peru, Suriname, Uruguay, and Venezuela. It is a non-breeding visitor to Trinidad and Tobago and a vagrant to the Falkland Islands and Tristan da Cunha. Its natural habitats are rivers, swamps, and freshwater lakes. less ↑

The great egret (Ardea alba), also known as the common egret, large egret or (in the Old World) great white egret or great white heron is a large, widely distributed egret, with four subspecies found in Asia, Africa, the Americas, and southern Europe. Distributed across most of the tropical and warmer temperate regions of the world. It builds tree nests in colonies close to water. less ↑

The little blue heron (Egretta caerulea) is a small heron. It breeds in the Gulf states of the US, through Central America and the Caribbean south to Peru and Uruguay. It is a resident breeder in most of its range, but some northern breeders migrate to the southeastern US or beyond in winter. There is post-breeding dispersal to well north of the nesting range, as far as the Canada–US border. less ↑

The cattle egret (Bubulcus ibis) is a cosmopolitan species of heron (family Ardeidae) found in the tropics, subtropics and warm temperate zones. It is the only member of the monotypic genus Bubulcus, although some authorities regard two of its subspecies as full species, the western cattle egret and the eastern cattle egret. Despite the similarities in plumage to the egrets of the genus Egretta, it is more closely related to the herons of Ardea. Originall less ↑

The striated heron (Butorides striata) also known as mangrove heron, little heron or green-backed heron, is a small heron, about 44 cm tall. Striated herons are mostly non-migratory and noted for some interesting behavioral traits. Their breeding habitat is small wetlands in the Old World tropics from west Africa to Japan and Australia, and in South America. Vagrants have been recorded on oceanic islands, such as Chuuk and Yap in the Federated States of Micrones less ↑

The agami heron (Agamia agami) is a medium-sized heron. It is a resident breeding bird from Central America south to Peru and Brazil. It is sometimes known as the chestnut-bellied heron, and is the only member of the genus Agamia (Reichenbach, 1853). In Brazil it is sometimes called Soco beija-flor the « hummingbird heron » thanks to its unique coloration pattern. less ↑

The capped heron (Pilherodius pileatus) is a water bird endemic to the neotropics, inhabiting the Amazonian rainforest from the center of Panama to the south of Brazil. It is the only species of the Pilherodius genus, and one of the least known of the heron family Ardeidae. It is superficially similar to the group of the night herons, but is active during daytime or at twilight. less ↑

The boat-billed heron (Cochlearius cochlearius), colloquially known as the boatbill, is an atypical member of the heron family, and was formerly thought to be in a monotypic family, Cochlearidae. It lives in mangrove swamps from Mexico south to Peru and Brazil. It is a nocturnal bird, and breeds semi-colonially in mangrove trees, laying 2–4 bluish white eggs in a twig nest. less ↑

The roseate spoonbill (Platalea ajaja) (sometimes placed in its own genus Ajaja) is a gregarious wading bird of the ibis and spoonbill family, Threskiornithidae. It is a resident breeder in South America mostly east of the Andes, and in coastal regions of the Caribbean, Central America, Mexico, the Gulf Coast of the United States, and on central Florida's Atlantic coast at Merritt Island National Wildlife Refuge, adjoined with NASA Kennedy Space Center. less ↑