Bar-Headed Goose (IMAGE) University of Exeter Caption An international team of scientists recently tracked the bar-headed goose while it migrated across the Himalayas. Now they have shown how these birds are able to tolerate running at top speed while breathing only 7% oxygen Credit Nyambayar Batbayar Usage Restrictions Credit: Nyambayar Batbayar License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.