Category: Procellariiformes

Activity pattern of foraging in the wandering albatross: a marine predator with twomodes of prey searching

Wandering Albatross (Diomedea exulans) Science Article 15 abstract The foraging activity of wandering albatrosses Diomedea exulans was studied with simultaneous use of satellite transmitters, activity recorders and loggers measuring the timing of feeding. On average birds spent 60% of their foraging time in flight, mostly during the day, and 40% on the water, mainly at […]

POTENTIAL INTERACTIONS BETWEEN WANDERING ALBATROSSES AND LONGLINE FISHERIES FOR PATAGONIAN TOOTHFISH AT SOUTH GEORGIA

Wandering Albatross (Diomedea exulans) Science Article 10 abstract We examine the extent of overlap between South Georgia wandering albatrosses(Diomedea exulans) and local longline fishing for Patagonian toothfish (Dissostichuseleginoides), using satellite-tracking data and precise haul locations, respectively. Weconclude that D. exulans breeding at South Georgia have a relatively low potential riskof interaction with longline fisheries around […]

Heart rate and energy expenditure of incubating wandering albatrosses: basallevels, natural variation, and the effects of human disturbance

Wandering Albatross (Diomedea exulans) Science Article 13 abstract We studied the changes in heart rate (HR) associated with metabolic rate of incubating and resting adult wandering albatrosses (Diomedea exulans) on the Crozet Islands. Metabolic rates of resting albatrosses fitted with external HR recorders were measured in a metabolicchamber to calibrate the relationship between HR and […]

Population changes and biology of the wandering albatross Diomedea exulans gibsoni at the Auckland Islands

Wandering Albatross (Diomedea exulans) Science Article 6 abstract Gibson’s wandering albatross Diomedea exulans gibsoni is endemic to the Auckland Islands in the New Zealand subantarctic. In 1991 a programme of regular census and population study was initiated to assess the impact of longline fisheries bycatch on the status of the subspecies. This paper reports on […]

Functional significance of sexual dimorphism in Wandering Albatrosses, Diomedea exulans

Wandering Albatross (Diomedea exulans) Science Article 9 abstract 1.The investigation covered whether sexual dimorphism could affect flight performancein a manner that is consistent with differences in at-sea distribution of male and femaleWandering Albatrosses, Diomedea exulans Linnaeus. Adult morphology was also comparedto near-fledged chicks to assess whether morphological differences are consistent with different at-sea distributions of […]

COURTSHIP BEHAVIOUR OF THE WANDERING ALBATROSSDIOMEDEA EXULANS AT BIRD ISLAND, SOUTH GEORGIA

Wandering Albatross (Diomedea exulans) Science Article 1 abstract The behaviour postures and their sequences during courtship displays of the Wandering Albatross Diomedea exulansat South Georgia are described. Females initiated most display bouts, which began with a series of greetings. Thecore of the display consisted of a rapid sequence of head movements, snaps, ritualized preening and […]

Levy flight search patterns of wandering albatrosses

Wandering Albatross (Diomedea exulans) Science Article 18 abstract LEVY flights are a special class of random walks whose step lengths are not constant but rather are chosen from aprobability distribution with a power-law tail. Realizations of Levy flights in physical phenomena are very diverse, examplesincluding fluid dynamics, dynamical systems, and micelles [1,2]. This diversity raises […]

EXCHANGE OF THE WANDERING ALBATROSS DIOMEDEA EXULANSBETWEEN THE PRINCE EDWARD AND CROZET ISLANDS: IMPLICATIONSFOR CONSERVATION

Wandering Albatross (Diomedea exulans) Science Article 7 abstract Exchange of 61 wandering albatrosses Diomedea exulans has been recorded between the French Crozet Islandsand the South African Prince Edward Islands, 1 068 km apart in the Southern Ocean. Most movements of bandedbirds (57) have been westwards, from the Crozets to the Prince Edwards, In all, 18 […]

Postnatal dispersal of wandering albatrosses Diomedea exulans:implications for the conservation of the species

Wandering Albatross (Diomedea exulans) Science Article 8 abstract Many large marine vertebrates are today threatened by human activities and it istherefore crucial to obtain information on their distribution and behaviour at sea. Inparticular little is known about the time necessary for juveniles to acquire the foragingskills of adults. We tracked 13 juvenile wandering albatrosses Diomedea […]

TIMING OF FORAGING BY THE WANDERING ALBATROSS DIOMEDEA EXULANS

Wandering Albatross (Diomedea exulans) Science Article 5 abstract Deployment of devices which record timing and magnitude of food ingestion in two wandering albatrosses Diornedea exulans at sub-Antarctic Marion Island shows that feeding occurred both at night and during the day, but with most ingestion events (70%) occurring during daylight hours. John COOPER, Rory P. WILSON […]