Formal comment to Soler et al.: Great spotted cuckoo nestlings have no antipredatory effect on magpie or carrion crow host nests in southern Spain

1 Department of Biology of Organisms and Systems (BOS), University of Oviedo, Oviedo, Spain, 2 Research Unit of Biodiversity (UMIB, CSIC, UO), Mieres, Spain, 3 FitzPatrick Institute of African Ornithology, University of Cape Town, Cape Town, South Africa, 4 Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland, 5 Dep. of Agro-forestry, University of Valladolid, Palencia, Spain, 6 Sustainable Forest Management Research Institute, Palencia, Spain, 7 Departamento de Biodiversidad y Gestión Ambiental, Universidad de León, León, Spain