Affiliation: | 1.Ornithology Section, Department of Zoology, National Museums of Kenya, P.O. Box 40658-00100, GPO Nairobi, Kenya ;2.Department of Geoecology, Institute of Geosciences and Geography, Martin Luther University Halle-Wittenberg, 06099, Halle (Saale), Germany ;3.Department of Ecology and Biogeography, Nicolaus Copernicus University Toruń, 87-100, Toruń, Poland ;4.Evolutionary Zoology, Department of Biosciences, University of Salzburg, 5020, Salzburg, Austria ; |