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The ring-tailed lemur has a complex array of distinct vocalizations used to maintain group cohesion during foraging and alert group members to the presence of a predator. The tables below detail calls documented in the wild and studied at the Duke Lemur Center .
The indri makes loud, distinctive songs, which can last from 45 seconds to more than 3 minutes. Song duration and structure varies among and even within groups, but most songs have the following three-phase pattern. [24] Usually, a roaring sequence lasting for several seconds will precede the more characteristic vocalizations.
The sickle-billed vanga belongs to the family Vangidae, one of Madagascar's families.. Madagascar is an island nation located off the southeastern coast of Africa.Because of its long separation from neighboring continents—through tectonic movement, it split from Africa about 160 million years ago, and from India around 90 million years ago—it contains many species endemic to the island. [1]
The diademed sifaka (Propithecus diadema), or diademed simpona, is an endangered species of sifaka, one of the lemurs endemic to certain rainforests in eastern Madagascar. Along with the indri , this species is one of the two largest living lemurs, with an average weight of 6.5 kg [ 4 ] and a total adult length of approximately 105 centimetres ...
They are found exclusively on the island of Madagascar, primarily in forests but with some species also in savannas, shrublands, or wetlands. They range in size from the Margot Marsh's mouse lemur , at 8 cm (3 in) plus a 11 cm (4 in) tail, to the indri , at 90 cm (35 in) plus a 6 cm (2 in) tail.
The northern sportive lemur (Lepilemur septentrionalis), also known as the Sahafary sportive lemur or northern weasel lemur, is a species of lemur in the family Lepilemuridae. It is endemic to Madagascar. As a result of severe ecological and human pressures, the lemur is classified as Critically Endangered (CR) by the IUCN Red List. [1]
The black-and-white ruffed lemur (Varecia variegata) is an endangered species of ruffed lemur, one of two which are endemic to the island of Madagascar. Despite having a larger range than the red ruffed lemur , it has a much smaller population that is spread out, living in lower population densities and reproductively isolated .
Coquerel's sifaka (Propithecus coquereli) is a diurnal, medium-sized lemur of the sifaka genus Propithecus.It is native to northwest Madagascar.Coquerel's sifaka was once considered a subspecies of Verreaux's sifaka but was eventually granted full species status.