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Article
Cornelia Voigt, Auteur ; Stefan Leitner, Auteur ; Manfred Gahr, Auteur ; Andries Ter Maat, AuteurSinging in tropical and Southern hemisphere birds often occurs throughout the year in the form of duetting, which is thought to be associated with year-round territoriality. White-browed Sparrow Weavers (Plocepasser mahali) are cooperatively bre[...]
Article
Stefan Leitner, Auteur ; Peter Mundy, Auteur ; Cornelia Voigt, AuteurThis paper describes size and body condition of individuals in a population of the cooperatively breeding White-browed Sparrow-Weaver Plocepasser mahali in south-western Zimbabwe in relation to the birds' social status within their colony. We un[...]
Article
Christian Dietzen, Auteur ; Cornelia Voigt, Auteur ; Michael Wink, Auteur ; Manfred Gahr, Auteur ; Stefan Leitner, AuteurIsland canaries (Serinus canaria) are characterised as a species living exclusively on North Atlantic islands, mainly on the Azores, Madeira and Canary Islands. Although they are very common in their habitats, their behaviour and breeding system[...]
