title: Animal navigation: northern exposure.
abstract: A recent study has found that sparrows moved gradually east above the Arctic Circle completely altered their migration strategy after encountering the massive natural change in declination near the magnetic pole. This should not happen--or should it?
authors.affiliation: Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey 08544-1004, USA.
authors.forename: James L
authors.initials: JL
authors.lastname: Gould
mesh_terms: D025041:Animal Migration / Q000502:physiology*; D000818:Animals; D001110:Arctic Regions; D005843:Geography; D008280:Magnetics; D009949:Orientation / Q000502:physiology*; D046370:Sparrows / Q000502:physiology*