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Article
Courtney L. Pike, Auteur ; Barbara Kofler, Auteur ; Heinz Richner, Auteur ; Sabine Tebbich, AuteurIn the Galapagos Islands, many endemic landbird populations are declining due to habitat degradation, food availability, introduced species and other factors. Given nestlings typically lack efficient defense mechanisms against parasites, hematop[...]
Article
Verena Saladin, Auteur ; Mathias Ritschard, Auteur ; Alexandre Roulin, Auteur ; Pierre Bize, Auteur ; Heinz Richner, AuteurWe have investigated genetic parentage in a Swiss population of tawny owls (Strix aluco). To this end, we performed genetic analysis for six polymorphic loci of 49 avian microsatellite loci tested for cross-species amplification. We found one ex[...]
Article
Michele Wegmann, Auteur ; Armelle Vallat-Michel, Auteur ; Heinz Richner, AuteurThe striking variation in colour and maculation of bird eggs has fascinated biologists since centuries, and many hypotheses based on mechanical, physiological or signalling functions have been proposed for its evolution by natural and sexual sel[...]
Article
Barbara Tschirren, Auteur ; Heli Siitari, Auteur ; Verena Saladin, Auteur ; Heinz Richner, AuteurDuring egg formation, female birds deposit antibodies against parasites and pathogens they were exposed to before egg laying into the yolk. In captive bird species, it has been shown that these maternal immunoglobulins (maternal yolk IgGs) can p[...]
