Migrating birds may "see" Earth's magnetic field. Migrating birds, it seems, can "see" Earth's magnetic field which they use as a compass to guide them around the globe.
Specialised neurons in the eye, sensitive to magnetic direction, have been shown for the first time to connect via a specific brain pathway to an area in the forebrain of birds responsible for vision, German researchers said on Wednesday.
Scientists have known for many years, from behavioural experiments, that birds use an int...