Northern Wheatear (Oenanthe oenanthe) Science Article 5
Orientation experiments were performed with wheatears (Oenanthe oenanthe) subjected to artificially manipulated magnetic fields, in Sweden and Western Greenland, during the autumn migration period. The objective was to compare responses by birds exposed to widely different geomagnetic conditions and, specifically, to clarify if birds are able to use magnetic cues for orientation at high geomagnetic latitudes, as in Western Greenland.
ROLAND SANDBERG ET AL, J. exp. Biol. 155, 51-64 (1991)