migration

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migration

the movement of people into (immigration) and out of (emigration) a country that serves to increase or decrease the country's POPULATION and labour force. For example, immigration was an important factor in the early colonization of Australia and New Zealand, and the USA and Canada.
References in classic literature ?
The population is migratory, usually disappearing on the verge of quarter-day, and generally by night.
MULTAN -- Three teams of Wildlife department Dera Ghazi Khan and a team of Wildlife department Multan have been sent to areas around Indus and Chenab rivers to check the illegal hunting of migratory birds.
MULTAN:Three teams of the Dera Ghazi Khan wildlife department and a team of the Multan wildlife department on Tuesday were sent to areas around the Indus and Chenab rivers to check the illegal hunting of migratory birds.
Deemed as important migratory sites and habitat of migratory birds frequenting the country from October to March every year, the Department of Environment and Natural Resources (DENR) Central Luzon appeals to the public to protect and conserve wetland areas in the region.
UNDERSCORING the importance of maintaining the Candaba swamp and other important wetlands in Central Luzon, an official of the Department of Environment and Natural Resources (DENR) reiterated his appeal to the public to help protect the country's unique ecosystems, especially wetlands that serve as a wintering area for thousands of migratory birds during migration season.
CHITRAL -- The scanty rainfall has led to the low migratory Siberian duck arrivals in Chitral valley and thus, delaying the start of the hunting season.
Tacloban City - Migratory birds from the cold regions of China have begun to arrive in the bays of Carigara and Ormoc in Leyte province to feed and roost.
ISLAMABAD -- The second meeting of Houbara Bustard and Migratory Birds Endowment Fund discussed the process of distribution and allocation of funds for the conservation of the avian guests.
Thousands of migratory birds from the Himalayan and Siberian regions are arriving to the riverine areas and water bodies in the northern region, reports BSS.
Some of these wonderfully colourful migratory birds are flocking to Qatar's several natural water bodies and remote beaches to take rest and breed this season.
International Migratory Bird Day was marked by The Sharjah Environment and Protected Areas Authority (EPAA) with great fervour.
For World Migratory Bird Day, Borja Heredia of the Convention on Migratory Species tells DW why countries should collaborate to protect the world's feathered travelers.