Αποτελέσματα Αναζήτησης
6 Οκτ 2024 · 121 species in 5 families including frogmouths, potoos, and the oilbird; worldwide except in the extreme north; nocturnal and concealingly coloured, with weak feet, soft plumage, and very large mouths; most feed on insects caught in flight; length 15–60 cm (6–24 inches).
Birds are a group of warm-blooded vertebrates constituting the class Aves (/ ˈ eɪ v iː z /), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Birds are classified into the Kingdom Animalia (i.e. Animals). The kingdom is further divided into the Phylum. Birds are in the Phylum Chordata (Animals with a backbone).
The revised sequence of Orders below is a step towards our goal of representing the evolutionary history of the major groups of birds. Species totals in parentheses are tallied from the IOC World Bird List, 12.1.
5 Ιαν 2024 · Birds belong to the class Aves, which is a group of warm-blooded vertebrates characterized by feathers, beaks, and the ability to lay eggs. They are a diverse group of animals with over 10,000 known species and can be found in various ecosystems around the world.
Taxonomy enables study of anatomical, genetic, behavioral, and ecological patterns within bird groups. Differences between penguins and petrels or hawks and herons become analyzable. Biogeography. Mapping bird families and species by location reveals geographic distributions and ranges.
6 Οκτ 2024 · Bird, any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded vertebrates more related to reptiles than mammals.
