Emigrant

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Emigrant

 

in biology, an animal that leaves its natural habitat, migrating beyond the boundaries of its accustomed area of distribution. The migration of such animals is frequently massive and is usually related to mass reproduction, which results in a shortage of food and, therefore, in the departure of animals from their natural habitat. Examples of emigrants are lemmings, squirrels, nutcrackers, Pallas’s sandgrouse, various species of swarming locusts, and sometimes the steppe lemming (Lagurus lagurus), as well as butterflies and their caterpillars and dragonflies.

Emigrants perish in large numbers while moving. Some drown when crossing rivers, and many fall victim to predators. They frequently fail to find a suitable new habitat and die. There have been some cases in which animals’ areas of distribution have been expanded as a result of migration. Examples in the 20th century include the population of Kamchatka by squirrels in the 1920’s and the population of the Antilles Islands by the buff-backed heron (Bubulcus ibis) in the 1930’s.

References in periodicals archive ?
The estimation determined that unskilled emigrants and, skilled and unskilled non-migrants have a complementarity with capital.
There are only seven Protectorate of Emigrants offices located in Peshawar, Rawalpindi, Karachi, Lahore, Quetta, Multan and Malakand which are heavily burdened while catering the needs of thousands of the people in terms of issuing protectors.
The majority of emigrants head for the UK and Australia but increasing numbers are going to Canada.
Kaddissi also noted that the visit of the young Lebanese emigrants to Lebanon today is to return to their roots to discover the identity of their motherland, its peculiarities, heritage and traditions.
The number of Kerala emigrants who returned and started living in Kerala (REM) in 2011 is estimated to be 1.
Kashif Noor commented "It is hoped that this will surely result in minimizing the emigration cost and due to involvement of alternate channels, the emigrants from far flung area shall also get benefit from this facility at their home place.
The emigrant Pakistanis would also stay insured for five years even after coming back to Pakistan instead of the existing risk coverage period of two years.
Security forces raided a house where the smugglers had grouped the emigrants before boarding them on their trip.
50,000/- Maternity benefit to women emigrants enhanced from Rs.
Minister of State for Diaspora, Joe McHugh, has said that car insurance quotes for returning emigrants are 'criminally expensive.
Bassil gave a word on the occasion saying that the project aimed to facilitate the accomplishment of paperworks relevant to emigrants and give them the opportunity to visit the website of the ministry as if they visited the embassy personally.
The government is mindful about phenomena of extraction of money from the intending emigrants by the licensed OEP as well as the unauthorized sub-agents.