“…In mole rats, the magnetic compass appears to be mediated by a mechanism involving permanently magnetic material, presumed to be particles of biogenic magnetite (Kimchi & Terkel, 2001;Marhold, Burda, Kreilos, & Wiltschko, 1997;. In contrast, the magnetic compass of songbirds and amphibians is light dependent (Deutschlander, Borland, & Phillips, 1999;Freake & Phillips, 2005;Phillips & Borland, 1992;W. Wiltschko & R. Wiltschko, 2005) and sensitive to low-level radio frequency fields (Phillips & Freake, 2006;Ritz et al, 2004), consistent with a magnetoreception mechanism involving a light-sensitive biochemical reaction (Ritz et al, 2000).…”