Gerhard Nikolaus

Spring weights of some Palaearctic passerines in Ethiopia and Kenya : evidence for important migration staging areas in eastern Ethiopia

David J. Pearson, Herbert Biebach, Gerhard Nikolaus, 2014 .

Stable isotopes of soil collected from feet of two species of migratory Acrocephalus give clues to stopover sites

David J. Pearson, Gerhard Nikolaus, Elizabeth Yohannes, 2012 .