Auflistung Zweitveröffentlichungen (grüner Weg) nach DDC-Klassifikation "ddc:590"
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Leucocytes in adult burrowing parrots Cyanoliseus patagonus in the wild: variation between contrasting breeding seasons, gender, and individual condition
(2010)Wild birds exposed to stressors may modulate their investment in immunity. We studied the leucocytes of breeding burrowing parrots (Cyanoliseus patagonus) in Patagonia during five breeding seasons, during which global ... -
Moving polewards in winter: a recent change in the migratory strategy of a pelagic seabird?
(2010)Background: During the non-breeding period, many birds migrate to milder areas, found closer to the equator than their breeding sites. Opposite movements are very rare. In the Southern Ocean, the abundance of 13C declines ... -
Non-invasive measurement of faecal glucocorticoid metabolites in Upland Geese Chloephaga picta
(2009)Glucocorticoid (GC) hormones rise in response to stressors, including natural events including weather or predator presence, and human activities, such as hunting, scientific research or recreational visits. However, because ... -
Plasticity versus repeatability in seabird migratory behaviour
(2010)Pelagic seabird populations can use several discrete wintering areas, but it is unknown if individuals use the same wintering area year after year. This would have consequences for their population genetic structure and ... -
Population genetic structure and colonisation of the western Antarctic Peninsula by the seabird tick Ixodes uriae
(2012)Recent observations on the western Antarctic Peninsula have suggested that changing climatic conditions may be increasing pressure on breeding seabirds due to higher exploitation rates by the tick Ixodes uriae. Using data ... -
Prevalence of blood parasites in seabirds - a review
(2011)Introduction: While blood parasites are common in many birds in the wild, some groups seem to be much less affected. Seabirds, in particular, have often been reported free from blood parasites, even in the presence of ... -
Seasonal clutch size decline and individual variation in the timing of breeding are related to female body condition in a non-migratory species, the Upland Goose Chloephaga picta leucoptera
(2010)Several studies have shown that waterfowl females in good condition lay larger clutches and start egg-laying earlier in a breeding season. However, most of these studies lack corresponding data on individual condition and ... -
Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions
(2008)Based on growing knowledge on the distribution of stable isotopes in marine food webs, a powerful tool to study movements and trophic position of seabirds has been developed. Here we provide an updated review of isotope ... -
The high Andes, gene flow and a stable hybrid zone shape the genetic structure of a wide-ranging South American parrot
(2011-06-15)Background: While the gene flow in some organisms is strongly affected by physical barriers and geographical distance, other highly mobile species are able to overcome such constraints. In southern South America, the Andes ... -
Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis
(2009)Seabird colonies provide rare opportunities to study trophic segregation in an entire bird community. We here present data on nitrogen and carbon isotope ratios of eight species of seabirds from New Island, Falkland Islands, ...