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A water bird, alternatively waterbird or aquatic bird, is a bird that lives on or around water. In some definitions, the term water bird is especially applied to birds in freshwater ecosystems, although others make no distinction from seabirds that inhabit marine environments. Some water birds (e.g. wading birds) are more terrestrial while ...
An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms — aquatic life —that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1]
Birds feature in the flag designs of 17 countries and numerous subnational entities and territories. [325] Birds are used by nations to symbolise a country's identity and heritage, with 91 countries officially recognising a national bird. Birds of prey are highly represented, though some nations have chosen other species of birds with parrots ...
Penguins are a group of aquatic flightless birds from the family Spheniscidae (/ s f ɪ ˈ n ɪ s ɪ d iː,-d aɪ /) of the order Sphenisciformes (/ s f ɪ ˈ n ɪ s ə f ɔːr m iː z /). [4] They live almost exclusively in the Southern Hemisphere: only one species, the Galápagos penguin, is found north of the Equator.
Grebe. Grebes (/ ˈɡriːbz /) are aquatic diving birds in the order Podicipediformes (/ ˌpɒdɪsɪˈpɛdɪfɔːrmiːz /). [1] Grebes are widely distributed freshwater birds, with some species also found in marine habitats during migration and winter. Most grebes fly, although some flightless species exist, most notably in stable lakes.
Spatial cognition is used in visual search when an animal or human searches their environment for specific objects to focus on among other objects in the environment. [72] Detour behaviour Some animals appear to have an advanced understanding of their spatial environment and will not take the most direct route if this confers an advantage to ...
Aquatic locomotion. A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
Anseriformes. Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which includes over 170 species of waterfowl, among them the ducks, geese, and swans. Most modern ...