...Agnès Lewden; Tristan Halna du Fretay; Antoine Stier ABSTRACT Once a year, penguins undergo a catastrophic moult, replacing their entire plumage during a fasting period on land or on sea-ice during which time individuals can lose 45% of their body mass. In penguins, new feather synthesis precedes...

... in a colonial seabird, the king penguin ( Aptenodytes patagonicus ). We subjected 77 birds (44 males, 33 females) at various stages of incubation and chick-rearing to three experimental stressors (metal sound, distant approach and capture) known to vary both in their intensity and associated risk, and monitored...

...P. J. Ponganis; J. St Leger; M. Scadeng ABSTRACT The anatomy and volume of the penguin respiratory system contribute significantly to pulmonary baroprotection, the body O 2 store, buoyancy and hence the overall diving physiology of penguins. Therefore, three-dimensional reconstructions from...

...Gemma Carroll; David Slip; Ian Jonsen; Rob Harcourt Determining where, when and how much animals eat is fundamental to understanding their ecology. We developed a technique to identify a prey capture signature for little penguins from accelerometry, in order to quantify food intake remotely. We...

... interests. © 2014. Published by The Company of Biologists Ltd 2014 Acoustic telemetry Energetics Hypoxia Logger Penguin Scaling Seal Shark Stroke frequency Temperature The collective term ‘biologging’ has been coined to describe a process by which researchers gain information...

... analyses of marine vertebrates. In a fluid marine environment,characterized by curvilinear structures, linearly interpolated track data are not realistic. Based on these two facts, we interpolated tracking data from albatrosses, penguins, boobies, sea lions, fur seals and elephant seals using six...

... female macaroni penguins, breeding on the Kerguelen Islands(48°45′–50°00′S,68°45′–70°58′E; South Indian Ocean), to record depth, two-dimensional acceleration (stroke cycle frequency and body angle)and temperature. We investigated how they controlled body angle and allocated their submerged time...

...Rory P. Wilson; Jan M. Kreye; Klaus Lucke; Heather Urquhart SUMMARY The effect of externally mounted antennae on the energetics of penguins was studied by mounting various antennae on a transducer fixed to a model Magellanic penguin Spheniscus magellanicus to determine drag, run at speeds of up...

...C. Thouzeau; G. Peters; C. Le Bohec; Y. Le Maho SUMMARY Male king penguins are able to store undigested food in their stomach for up to 3 weeks during their incubation fast, which evidently implies some modification of their digestive process. Using small electronic recorders, we studied the change...

...Rory P. Wilson; Alejandro Simeone; Guillermo Luna-Jorquera; Antje Steinfurth; Sue Jackson; Andreas Fahlman SUMMARY Humboldt penguins Spheniscus humboldti in captivity and free-living Magellanic penguins S. magellanicus were fitted with loggers to determine beak angles during breathing. The Humboldt...

... H to estimate V̇ O 2 in free-ranging animals. Using the relationship between the oxygen pulse (OP, the amount of oxygen used per heart beat) and an index of body condition (or nutritional index, NI), a relationship between f H and V̇ O 2 was established for resting king penguins exposed to a variety...

... fat stores) and/or inactivity might have on the relationship between heart rate and rate of oxygen consumption. In the present study, we investigate the extent to which body condition can affect the use of heart rate as an indicator of the rate of oxygen consumption. Twenty-two breeding king penguins...

...Thierry Lengagne; Jacques Lauga; Thierry Aubin ABSTRACT In king penguin colonies, several studies have shown that both parent–chick recognition and mate–pair recognition are achieved by acoustic signals. The call of king penguins consists of strong frequency modulations with added beats of varying...

...Rudolf Bannasch; Rory P. Wilson; Boris Culik ABSTRACT Wind tunnel and water tank experiments were carried out on a penguin model in order to optimise the shape and attachment of a back-mounted datalogger. Device-induced turbulence was minimised when the unit was placed in the most caudal position...

...Hege Johannesen; Stewart C. Nicol ABSTRACT Oxygen consumption , tidal volume, respiratory frequency and the composition of the gas in the interclavicular air sac were measured in the little penguin Eudyptula minor (Forster) at ambient temperatures ( T a ) of 5 and 20 °C. increased from 14.60 ml 02...