January 2011 – vol. 104, issue 1–15 By Bernd-Ulrich Meyburg, Paul W. Howey, Christiane Meyburg and Klaus Dietrich Fiuczynski Hobby, by Bernd Meyburg A tiny satellite transmitter, a prototype of the smallest unit produced so far and weighing just 5 g, was fitted to an adult Hobbyin Germany in August 2008. Two whole migration cycles were recorded successfully from the transmitter carried by this particular Hobby. All four migra... This article is only available to registered users.To read more, please log in or purchase a subscription.