The first comprehensive review of all aspects of the biology of moult, drawing information
from across the literature and in all birds, from penguins to passerines. Feathers are …

Flight is a unique adaptation at the core of many behaviours in most bird species, whether it
be foraging, migration or breeding. Birds have developed a wide diversity of flight modes (eg …

Migration conveys an immense challenge, especially for juvenile birds coping with enduring
and risky journeys shortly after fledging. Accordingly, juveniles exhibit considerably lower …

Juvenile songbirds on spring migration travel from tropical wintering sites to temperate
breeding destinations thousands of kilometres away with no prior experience to guide them …

Traditional models for female extra‐pair matings assume that females benefit indirectly from
extra‐pair mating behaviour. Under these so‐called adaptive models, extra‐pair males are …

Flight behaviours of birds have been extensively studied from different angles such as their
kinematics, aerodynamics and, more generally, their migration patterns. Nevertheless, much …

A recent study demonstrated that semipalmated sandpiper (Calidris pusilla) wing lengths
have shortened from the 1980s to the present-day. We examined alternative and untested …

In migratory birds, mistimed arrival might have negative consequences for individual fitness,
causing population declines. This may happen if arrival time is not synchronized with …

Body and head shape among fishes both vary between environments influenced by water
velocity and across ontogeny. Although the shape changes associated with variation in …

In many migratory songbirds, males arrive earlier at stopover sites and at the breeding
grounds ('protandry') and older birds precede younger ones, but less is known about age …