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Stories about: ancient birds

North American Birds Invaded the South 3 million Years Ago Scientists studying bird's migration discovered that, after the Panama “land bridge” formed, birds from the North of the American continent migrated South and colonized the existing tropical species.The two American continents were separated until 3 million years ago, when a tectonic uplift took plac... 13 July 2010 11:08 GMT T. Rex Had the Nose of a Dog Though Tyrannosaurus Rex has been thoroughly studied for several years, very little was known about the way in which it used its sense of smell in "action." While some anthropologists claimed that the small size of the dinosaur's brain was clearly an obstacle in the way of the creature processing too much smell-... 29 October 2008 07:59 GMT