Map of the screening locations of Norwegian wild birds for avian influenza (AIV). Red indicates wild birds positive for AIV and green indicates negative for AIV. Previous data was taken from Tønnessen et al.  (northern Norway) and Kulberg Sjurseth et al.  (middle to southern Norway). WTE: white-tailed eagle (n = 43); NG: northern goshawk (n = 29) are from the current study. Red lines indicate the predicted migration routes using data and information from Norwegian SEATRACK project, www.seapop.no/en/seatrack and Dalby et al.