Tracking the Migration of Bar-headed Geese

For more information on the movement of wild birds in Asia and how this relates to avian influenza viruses, see http://www.pwrc.usgs.gov/ai. The autumn migration routes of bar-headed geese captured before the 2008 breeding season at Qinghai Lake, China, were documented using satellite tracking data. Our results showed that there were four typical migration routes in autumn with variation in timing among individuals in start and end times and in total migration and stopover duration.