BACKGROUND Comparing patterns of terrestrial and marine defaunation helps to place
human impacts on marine fauna in context and to navigate toward recovery. Defaunation …

Colonial seabirds are relatively easy to observe, count, measure and manipulate, and
consequently have long been used as models for testing ecological hypotheses. A …

Summary 1 We studied chick diet in a known‐age, sexed population of a long‐lived seabird,
the Brünnich's guillemot (Uria lomvia), over 15 years (N= 136; 1993–2007) and attached …

254—PErSPEctivES in ornithology— Auk, vol. 125 movements in seabirds (eg, Anderson
and Ricklefs 1 87). This technology has severe limitations in location precision and range …

Characteristics of the tropical oceanic environment (low productivity, little seasonality) and
poor diversity of tropical seabird foraging methods and prey relative to temperate and polar …

Many seabirds nesting in areas bordering the North Sea have recently experienced large
annual variation in breeding success, including reproductive failures in some cases. In …

When 2 closely related species co-occur, each exhibiting sex-specific differences in size,
resource partitioning is expected. We studied sex-specific foraging behaviour of 2 sympatric …

Sexual segregation, common in many species, is usually attributed to intra-specific
competition or habitat choice. However, few studies have simultaneously quantified sex …

Flexibility in foraging behaviour is a key individual trait, promoting adaptive responses to
changing environmental conditions. Such flexibility can be especially pronounced in marine …

Recent technological innovations have led to the development of miniature, accelerometer-
containing electronic loggers which can be attached to free-living animals. Accelerometers …