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Muhammed (L), 13, of Syria and Mahdi Ghafour, 6, of Afghanistan plays on a pier on in Kladesholmen, Sweden. Last year Sweden received 162,877 asylum applications, more than any European country proportionate to its population. According to the Swedish Migration Agency, Sweden housed more than 180,000 people in 2015, more than double the total in 2014. The country is struggling to house refugees in proper conditions during the harsh winter; summer holiday resorts, old schools and private buildings are being turned into temporary shelters for asylum seekers as they wait for a decision on their asylum application. Sweden is facing new challenges on its migration policy after the massive arrival of refugees last year, forcing the country to drastically reduce the number of refugees passing through its borders. Stricter controls have had a significant effect on the number of arrivals, reducing weekly numbers from 10,000 to 800. The Swedish migration minister announced in January that the government will reject up to 80,000 refugees who applied for asylum last year, proposing strict new residency rules.
Herds of wildebeest cross the river in Masai Mara on Friday. Every year hundreds of thousands of wildebeest make the crossing from the Serengeti to Masai Mara game reserve to graze during the migration
Herdsmen ride as they migrate to the summer pasturing areas in a mountainous region in Altay Prefecture, Xinjiang Uighur Autonomous Region
Pelicans rest as the sun sets behind a water reservoir in Emek Hefer, north of the Israeli city of Tel Aviv. Thousands of migrant Pelicans pass though Israel on their way to Africa, and go back to Europe in summer
Wild geese fly over a farm field in Xanten, Germany. The geese migrated from Siberia to stay in the lower Rhine area over winter.