Search results
Results from the WOW.Com Content Network
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 ...
Anatidae is a large proportion of the 3% of bird species to possess a penis, [5] [6] though they vary significantly in size, shape, and surface elaboration. [7] Most species are adapted for copulation on the water only. They construct simple nests from whatever material is close at hand, often lining them with a layer of down plucked from the ...
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.
A challenge for any diving bird is the change in refraction between air and water. The eyes of many birds have two foveae (the fovea is the area of the retina with the greatest density of light receptors), [22] and a kingfisher can switch from the main central fovea to the auxiliary fovea when it enters water; a retinal streak of high receptor ...
Seabird. The sooty tern is highly aerial and marine and spends months flying at sea, returning to land only for breeding. [1] Raft of coastal seabirds [2] Gulf of St. Lawrence, Quebec, Canada. Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle ...
History. The American dipper, previously known as the water-ouzel, was the favorite bird of famous naturalist John Muir. He dedicated an entire chapter in his book The Mountains of California to the ouzel stating "He is the mountain streams' own darling, the humming-bird of blooming waters, loving rocky ripple-slopes and sheets of foam as a bee ...
An aquatic animal is any animal, whether vertebrate or invertebrate, that lives in bodies of water for all or most of its lifetime. [1] Aquatic animals generally conduct gas exchange in water by extracting dissolved oxygen via specialised respiratory organs called gills, through the skin or across enteral mucosae, although some are evolved from ...
A black-throated blue warbler perches on shrubs in Maine in this photo taken by Logan Parker. The warblers migrate from the Northeast to areas in and around the Caribbean and back each year.