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Article
René E. van Dijk, Auteur ; Raquel Robles, Auteur ; Ton G. G. Groothuis, Auteur ; Bonnie de Vries, Auteur ; Corine M. Eising, AuteurMelanin-based plumage ornaments have been shown to play an important role in male–male competition, but also influence inter-sexual communication. Consequently, ornaments may be associated with reproductive effort of both males and females. Fema[...]
Article
René E. van Dijk, Auteur ; Raquel Robles, Auteur ; Ton G. G. Groothuis, Auteur ; Bonnie de Vries, Auteur ; Corine M. Eising, AuteurMelanin-based plumage ornaments have been shown to play an important role in male-male competition, but also influence inter-sexual communication. Consequently, ornaments may be associated with reproductive effort of both males and females. Fema[...]
Article
Wendt Muller, Auteur ; Ton G. G. Groothuis, Auteur ; Cor Dijkstra, AuteurBiased mortality of the larger sex during the early developmental period has been reported for a number of size-dimorphic bird species. This can partly be explained by the fact that growing to larger size renders the larger sex more vulnerable t[...]
Article
Oscar Vedder, Auteur ; Sjouke-Anne Kingma, Auteur ; Nikolaus von Engelhardt, Auteur ; Peter Korsten, Auteur ; Ton G. G. Groothuis, Auteur ; Jan Komdeur, AuteurLaying eggs in nests of unrelated conspecific pairs to parasitize their parental care is a common phenomenon in birds. In blue tits Cyanistes caeruleus such conspecific brood parasitism (CBP) has never been reported in the literature. However, i[...]
Article
Suvi Ruuskanen, Auteur ; Veerle M. Darras, Auteur ; Bonnie de Vries, Auteur ; Marcel E. Visser, Auteur ; Ton G. G. Groothuis, AuteurIn birds, mothers can affect their offspring's phenotype and thereby survival via egg composition. It is not well known to what extent and time-scales environmental variation in resource availability, either via resource constrains or adaptive a[...]
Article
Corine M. Eising, Auteur ; Raquel Robles, Auteur ; Maarten Lasthuizen, Auteur ; Ton G. G. Groothuis, AuteurSubstantial amounts of maternal androgens are found in birds' eggs and have been shown to benefit offspring development. Within-clutch patterns of increasing androgen concentrations over the laying sequence are often hypothesized to compensate f[...]
Article
Bin-Yan Hsu, Auteur ; Cor Dijkstra, Auteur ; Ton G. G. Groothuis, AuteurEarly-life food conditions can have profound impact on adult behavioural performance. In song birds, early-life food conditions affect adult physiology and cognitive performance such as song learning and spatial learning. However, effects on rep[...]
