1 January 1970
Posted by: Richard Scrase
New research shows that migrating birds fly as high as 4,000 metres above sea level.
Small birds fly at high altitudes towards Africa
A new study from Lund University in Sweden shows that the great reed warbler and the red-backed shrike migrating from… http://www.understandinganimalresearch.org.uk/news/research-medical-benefits/migrating-small-birds-flying-at-4000m/