Gehrold A, Wikelski M. 2013. Great flexibility in autumn movement patterns of European Gadwalls (Anas strepera) (Gehrold et al. 2014)-reference data. Movebank Data Repository. <a href="https://doi.org/10.5441/001/1.26dg08hv/2">https://doi.org/10.5441/001/1.26dg08hv/2</a>