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Difficulties when assessing birdsong learning programmes under field conditions: a re-evaluation of song repertoire flexibility in the great titAmbient anthropogenic noise but not light is associated with the ecophysiology of free-living songbird nestlings.Positive effect of dietary lutein and cholesterol on the undirected song activity of an opportunistic breeder.Carotenoids, birdsong and oxidative status: administration of dietary lutein is associated with an increase in song rate and circulating antioxidants (albumin and cholesterol) and a decrease in oxidative damage.Songs differing in consistency elicit differential aggressive response in territorial birdsCarotenoid supplementation positively affects the expression of a non-visual sexual signalBirds reveal their personality when singing.Perfluoroalkyl substances in soft tissues and tail feathers of Belgian barn owls (Tyto alba) using statistical methods for left-censored data to handle non-detects.Light pollution disrupts sleep in free-living animalsIndividual consistency and phenotypic plasticity in rockhopper penguins: female but not male body mass links environmental conditions to reproductive investment.Breeding experience and the heritability of female mate choice in collared flycatchers.GnRH--a missing link between testosterone concentrations in yolk and plasma and its intergenerational effects.Intra-clutch ratio of yolk progesterone level changes with laying date in rockhopper penguins: a strategy to influence brood reduction?Non-breeding song rate reflects nutritional condition rather than body condition.Penguin chicks benefit from elevated yolk androgen levels under sibling competition.Oxytocin and vasopressin receptor gene variation as a proximate base for inter- and intraspecific behavioral differences in bonobos and chimpanzees.Coadaptation of offspring begging and parental provisioning--an evolutionary ecological perspective on avian family life.Hot or not: the effects of exogenous testosterone on female attractiveness to male conspecifics in the budgerigar.Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.Yolk androgen deposition without an energetic cost for female rockhopper penguins: a compensatory strategy to accelerate brood reduction?Does reproduction protect against oxidative stress?Two eggs, two different constraints: a potential explanation for the puzzling intraclutch egg size dimorphism in Eudyptes penguinsHigh levels of mercury and low levels of persistent organic pollutants in a tropical seabird in French Guiana, the Magnificent frigatebird, Fregata magnificens.Mates but not sexes differ in migratory niche in a monogamous penguin species.Extreme intra-clutch egg size dimorphism is not coupled with corresponding differences in antioxidant capacity and stable isotopes between eggs.Corticosterone, inflammation, immune status and telomere length in frigatebird nestlings facing a severe herpesvirus infection.Trophic ecology drives contaminant concentrations within a tropical seabird community.Migratory constraints on yolk precursors limit yolk androgen deposition and underlie a brood reduction strategy in rockhopper penguins.Environmental effects shape the maternal transfer of carotenoids and vitamin E to the yolkVitally important - does early innate immunity predict recruitment and adult innate immunity?Bonobo personality traits are heritable and associated with vasopressin receptor gene 1a variationBare-part color in female budgerigars changes from brown to structural blue following testosterone treatment but is not strongly masculinized.Reversed hatching order, body condition and corticosterone levels in chicks of southern rockhopper penguins (Eudyptes chrysocome chrysocome).Are corticosterone levels a good indicator of food availability and reproductive performance in a kittiwake colony?Disruptive effects of light pollution on sleep in free-living birds: season and/or light intensity-dependent?Can predatory bird feathers be used as a non-destructive biomonitoring tool of organic pollutants?Organohalogenated contaminants in eggs of rockhopper penguins (Eudyptes chrysocome) and imperial shags (Phalacrocorax atriceps) from the Falkland Islands.Concentrations in bird feathers reflect regional contamination with organic pollutants.Relationships between organohalogen contaminants and blood plasma clinical-chemical parameters in chicks of three raptor species from Northern Norway.Effects of breeding habitat (woodland versus urban) and metal pollution on the egg characteristics of great tits (Parus major).
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P50
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Marcel Eens
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Marcel Eens
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Marcel Eens
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Marcel Eens
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Marcel Eens
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Marcel Eens
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Marcel Eens
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Marcel Eens
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Marcel Eens
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