October 2015 – vol. 108, issue 10 Migratory birds undertake arduous journeys. But how can a bird manageÂ to travel up to 200 hours in non-stop, flapping flight from Europe to tropical Africa, from Canada to Europe, or across the pacific from Alaska to New Zealand? A new collaborative study of the Institute of Avian Research in Wilhelmshaven, Germany, the University of Vienna, the Vet-Med University of Vienna, the University of G... This article is only available to subscribed users.To read more, please log in or purchase a subscription.