Reply to López-Mañas et al. : Spatial population models of migrants should be underpinned by phenology, behavior, and ecology - Stefanescu, Constantí (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Hu, Gao (Nanjing Agricultural University) ; Oliver, Tom (University of Reading) ; Reynolds, Don R. (Rothamsted Research) ; Chapman, Jason W. (University of Exeter)