Bird migration becoming more hazardous
Wednesday, February 3, 2010 - 19:14
in Paleontology & Archaeology
(PhysOrg.com) -- Can you imagine living your whole life in summer? In one of the most spectacular wildlife migrations on the planet, millions of shorebirds do exactly this by making a 20,000km round trip from their Arctic breeding grounds to wetlands in the southern hemisphere and then migrating north again each year.