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It was the subject of scientific research until populations suddenly crashed in 1987 and it had disappeared completely by 1989. [7] Other species at Monteverde, including the Monteverde harlequin frog (Atelopus varius), also disappeared at the same time. Because these species were located in the pristine Monteverde Cloud Forest Reserve, and ...
Fish and frog melanophores are cells that can change colour by dispersing or aggregating pigment-containing bodies. Chromatophores are special pigment-containing cells that may change their size, but more often retain their original size but allow the pigment within them to become redistributed, thus varying the colour and pattern of the animal.
Disruptive patterns can also conceal specific features. Animals such as fish, birds, frogs and snakes can readily be detected by their eyes, which are necessarily round and dark. Many species conceal the eye with a disruptive eye mask, sometimes contrasting with a stripe above the eye, making it seem just part of a dark area of background.
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Cliff chirping frog (E. marnockii). Eleutherodactylus is a genus of frogs in the family Eleutherodactylidae. [2] Many of the 200 species of the genus are commonly known as "rain frogs" or "robber frogs", due to their sharp, high-pitched, insect-like calls. [3]
Western chorus frogs live in a variety of different habitats, but areas of more permanent water increase the risk of predation on eggs and/or tadpoles. To compensate for this, chorus frogs stick to mostly ephemeral freshwater areas, such as marshes, river swamps, meadows, grassy pools, and other open areas found in mountains and prairies.
These chorus frogs are nocturnal and are rarely seen, except during mating season. They become more active as the temperature begins to decrease and begin migrating toward water for the mating season. Most observations of this frog are on winter nights during or after rain. Because of this, little is known about the adult ornate chorus frog.