Tracking radar studies were carried out during the summer 1996 in the central polar basin
(85-90° N) to investigate if birds accomplish transpolar migration. We here report the …

The magnetic field, the sun, the stars and the polarization pattern of visible light during
twilight are important cues for orientation in nocturnally migrating songbirds. As these cues …

Autumn nocturnal bird migration was investigated using radar and visual observations.
Multivariate analyses assessed the influence of environmental variables on orientation. Two …

Homing pigeons can return from distant, unfamiliar release points. Experienced pigeons can
do so even if they are transported anesthetized and deprived of outward journey information …

The study of bird migration by satellite tracking began in the 1980s, after transmitters had
become sufficiently small to allow the monitoring of larger migrating species. The initial …

Vagrant birds, long thought to be mutant or otherwise navigationally incompetent
individuals, have now been shown to be the outer fringe of a growing population; vagrancy …

Our present understanding of orientation behaviour in birds is based on a broad array of
observational, experimental and analytical (statistical) techniques, which are briefly …

Compass orientation is central to the control of animal movement from the scale of local food-
caching movements around a familiar area in parids [1] and corvids [2, 3] to the first autumn …

Seven years have elapsed between this and the preceding major symposium on animal
orientation and navigation, held on Wallops Island, Va., USA in 1970. Never before between …

Migratory birds use the geomagnetic field and celestial cues to identify their migratory
direction. In cue-conflict situations, when the two sets of cues give contradictory information …