Feeding strategies of free-ranging Adélie penguins Pygoscelis adeliae analysed by multiple data recording

By Y. Ropert‐Coudert, A. Kato, J. Baudat, C. Bost, Y. le Maho, Y. Naito. Polar Biology, 2001

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A fine-scale time budget of Cape gannets provides insights into the foraging strategies of coastal seabirds (2004, background): “However, investigating such foraging patterns is challenging because of methodological difficulties in assessing food intake and food processing in seabirds (Wilson et al. 1992; Peters 1997; Grémillet et al. 2000; Ropert-Coudert et al. 2001).”
Feeding of diving predators and diel vertical migration of prey: King penguins¹ diet versus trawl sampling at Kerguelen Islands (2002, background): “INTRODUCTION The way in which seabirds obtain food at sea remains poorly understood despite scientific advances (e.g. Weimerskirch et al. 1994, Nevitt et al. 1995, Charrassin et al. 2001, Ropert-Coudert et al. 2001, Wilson et al. in press).”
Between air and water: the plunge dive of the Cape Gannet Morus capensis (2003, background): “If so, Gannets may secure some prey during the early part of the ascent, when detection and capture of prey are favoured because birds can view their prey from below (Burger et al. 1993, Ropert-Coudert et al. 2001 ).”
Patterns of energy acquisition by a central place forager: benefits of alternating short and long foraging trips (2004, methodology): “Rate of prey ingestion in foraging penguins is not linear when considered over short time periods because these birds feed on patchy prey (Ropert-Coudert et al., 2001).”