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The hoatzin (/ h oʊ ˈ æ t s ɪ n / hoh-AT-sin) [note 1] or hoactzin (/ h oʊ ˈ æ k t s ɪ n / hoh-AKT-sin) (Opisthocomus hoazin) [4] is a species of tropical bird found in swamps, riparian forests, and mangroves of the Amazon and the Orinoco basins in South America.
The hoatzin is a stunning, colourful bird from South America. [6] The hoatzin is found in the rainforest of the Amazon. [7] It has a long, permanently erected crest which gives the species a stunning silhouette. This gregarious species is often found in groups of more than 40 birds, and up to 100 birds during breeding season which occurs during ...
The hoatzin is the national bird of Guyana. This is a list of the bird species recorded in Guyana. The avifauna of Guyana include a total of 785 confirmed species, of which one has been introduced by humans and two are extinct or extirpated. None are endemic. An additional 33 species are hypothetical and one is uncertain (see below).
Gruae [3] is a clade of birds that contains the order Opisthocomiformes (hoatzin) and Gruimorphae (shorebirds and rails) identified in 2014 by genome analysis. [4] Previous studies have placed the Hoatzin in different parts of the bird family tree; however, despite its unusual and primitive morphology, genetic studies have shown the hoatzin is not as primitive or as ancient as once thought ...
Inopinaves is a clade of neoavian birds recovered in a compressive genomic systematic study using nearly 200 species in 2015. It contains the clades Opisthocomiformes and Telluraves (core landbirds); the study shows that the hoatzin diverged from other birds 64 million years ago. [2]
Like many other fossil birds, it is known from fragmentary remains, including the back portion of the skull, the specimen UCMP 42823 [1] and other bones of the extremities. From these remains it appears that this bird was similar to that of hoatzin, although smaller, and distinguished from it in the parietal wall of the skull is concave and the ...
A hoatzin. It has been observed that folivory is extremely rare among flying vertebrates. [2] Morton (1978) attributed this to the fact that leaves are heavy, slow to digest, and contain little energy relative to other foods. [2] The hoatzin is an example of a flighted, folivorous bird. There are, however, many species of folivorous flying insects.
Hoatzin (Opisthocomus hoazin), the only member of its order, is a pheasant-sized South American bird, with a total length of 65 cm (26 in) and a maximum weight of 1 kg (2.2 lb). The hyacinth macaw is the largest parrot.