Bird navigation: Slope of Earth’s magnetic field may be ‘stop sign’ for migrating species

Eurasian reed warblers migrate to sub-Saharan Africa each year – and they seem to use the slope of Earth’s magnetic field to judge when they have reached their European breeding grounds Life 27 January 2022 By Alex Wilkins A Eurasian reed warbler Shutterstock / Rafal Szozda Some birds rely on Earth’s magnetic field to navigate and … Read more