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Article
Kai Gedeon, Auteur ; Dennis Rödder, Auteur ; Chemere Zewdie, Auteur ; Till Topfer, AuteurThe occurrence of the Black-fronted Francolin Pternistis atrifrons is restricted to a tiny area in southern Ethiopia. Based on field studies from 2012 to 2014, we modelled the range and estimated the population size of the species in order to ev[...]
Article
J. Martin Collinson, Auteur ; Martin Päckert, Auteur ; Yvonne Lawrie, Auteur ; Wulf Gatter, Auteur ; Till Topfer, Auteur ; Ben Phalan, Auteur ; Lincoln Fishpool, AuteurThe Liberian Greenbul Phyllastrephus leucolepis is known only from the Cavalla Forest, Liberia, where it was seen between 1981 and 1984 but has not been found since the collection of the type, and only, specimen. It is similar to the common and [...]
Article
Ali Gholamhosseini, Auteur ; Mansour Aliabadian, Auteur ; Jamshid Darvish, Auteur ; Till Topfer, Auteur ; Glenn-Peter Saetre, AuteurDans Ardea (105(1) 2017)Black-headed Bunting Emberiza melanpcephala and Red-headed Bunting Emberiza bruniceps are closely related passerine species that were reported to meet in a hybrid zone southeast of the Caspian Sea, Iran, over 70 years ago. In this study, we revi[...]
Article
Sylke Frahnert, Auteur ; Martin Päckert, Auteur ; Dieter Thomas Tietze, Auteur ; Till Topfer, AuteurWe provide a short overview of current research activities in scientific ornithological collections. Such collection-based research covers a wide range of approaches and methods including faunistic, ecological, molecular systematic and conservat[...]
Article
Till Topfer, AuteurThis paper describes the proportion of adult and young Rooks Corvus frugilegus in wintering flocks. Based on field observations in the area of Dresden/Saxony an average proportion of only 4.7% juveniles was observed from 1998 to 2002. Most of th[...]
