title: Sensory biology: Search for the compass needles.
authors.forename: Henrik
authors.initials: H
authors.lastname: Mouritsen
mesh_terms: D000818:Animals; D001502:Beak / Q000166:cytology*; D010856:Columbidae / Q000033:anatomy & histology*; D007501:Iron / Q000378:metabolism*; D008264:Macrophages / Q000378:metabolism*; D060526:Magnetic Fields; D012677:Sensation
chemical_list: D007501:Iron