Why do migratory birds sing on their non-breeding grounds in Africa during the northern winter? It’s long been assumed that they are defending individual non-breeding territories, but by means of field experiments and radio-tracking of Willow Warblers in the field in Zambia, PhD student Marjorie Sorensen shows that the winter lives of Palaearctic-African migrants can be much more social and intriguing: read the full paper in Behavioral Ecology.
New paper on categorical signatures of identity
Our paper “Categorical identity signatures can reduce host error rates during brood parasitism” has been published in the journal PLoS Biology.