Many migratory birds and other animals are able to detect magnetism and use it as a navigation aid, but how they do this is not certain. Michael Walker is a New Zealander who has researched this question, investigating deposits of the iron-rich mineral magnetite in the brains of pigeons, bees, trout, tuna, stingrays and other animals.
Te whakamahi i tēnei tūemi
New Zealand Herald
Reference: 13 November 2003 (NZH-1001663)
Photograph by Paul Estcourt
Permission of the New Zealand Herald must be obtained before any re-use of this image.
Tāpiritia te tākupu hou