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Rousettus is a genus of Old World fruit bats or megabats, referred to as rousette bats. The genus is a member of the family Pteropodidae. The genus consists of seven species [1] that range over most of Africa to southeast Asia, and the islands of the south Pacific. They are among the few megabats capable of echolocation, and the only genus of ...
Bats are flying mammals of the order Chiroptera (/ k aɪ ˈ r ɒ p t ər ə /). [a] With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most birds, flying with their very long spread-out digits covered with a thin membrane or patagium.
Long-distance migrations occur in some bats – notably the mass migration of the Mexican free-tailed bat between Oregon and southern Mexico. [36] Migration is important in cetaceans, including whales, dolphins and porpoises; some species travel long distances between their feeding and their breeding areas. [37]
The fourth wave of Russian emigration took place after the collapse of the Soviet Union in 1991 when people began migrating from Russia in large numbers. This wave continues into the present, with the 2022 Russian invasion of Ukraine leading to considerable Russian emigration associated with the invasion.
Immigration to Russia involves foreign citizens (or people without any citizenship) seeking permanent residence in the territory of the Russian Federation.Historically, Russian empire was one of the World's leading destination for immigrants starting with the reign of Peter I in ca. 1700, and especially after the ascension of Catherine II to the Russian throne in 1762, until the October ...
The greater noctule bat (Nyctalus lasiopterus) is a rare carnivorous bat found in Europe, West Asia, and North Africa. [2] It is the largest and least studied bat in Europe with a wingspan of up to 46 centimetres (18 in) and is one of the few bat species to feed on passerine birds.
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Male common noctules do not migrate, but scatter along the females' migration routes to have higher chances of attracting the first females migrating back to the wintering regions. The reproductive cycle of male bats seems to correspond directly to season and food availability and spermatogenesis can be affected by body condition. [ 15 ]