Many birds show a surprising degree of intraspecific variability in migratory tendency and
choice of wintering site. In this study, we tracked the seasonal movements of 35 …

The phenomenon of bird migration has fascinated people from time immemorial. The
arrivals and departures of different species marked the seasons, heralding spring and …

Conspecific brood parasitism (CBP) is a reproductive tactic in which parasitic females lay
eggs in nests of other females of the same species that then raise the joint brood. Parasites …

Some aspects of the ecology of 93 waterbird species, found predominantly on freshwater
ecosystems, are reviewed. These species, belonging to six major orders—Anseriformes …

Studies of site fidelity have been hampered by arbitrary designations of spatial scale and the
lack of null models for comparison. We generated null expectations of fidelity at different …

Background Understanding the evolution of migration requires knowledge of the patterns,
sources, and consequences of variation in migratory behaviour, a need exacerbated by the …

Population spatial structuring among North Atlantic humpback whales Megaptera
novaeangliae on the summer feeding grounds was investigated using movement patterns of …

When and where to move is a fundamental decision to migratory birds, and the fitness‐
related costs and benefits of migratory choices make them subject to strong selective forces …

The annual return of beluga whales, Delphinapterus leucas, to traditional seasonal locations
across the Arctic may involve migratory culture, while the convergence of discrete …

We implanted satellite transmitters to track Northern Common Eiders Somateria mollissima
borealis from breeding grounds in West Greenland and eastern Arctic Canada, and from …