Migratory strategy.

(A) Individual tracks of eight migratory great spotted cuckoos for latitude versus time. Colors correspond to individual cuckoos, line types correspond to different years (2013: dash, 2014: solid, 2015: dotted). Some birds travel north from the breeding area before initiating migration. Stopover sites in Morocco and wintering areas in sub-Saharan Africa can be distinguished. (B) Travel speed between locations within different regions. Boxplots show the median, first and third quartile ("hinges") and the minimum and maximum values ("notches"). (C) Total numbers of travel segments collected during migration classified as either stationary or travelling (speed of >5 km/h), occurring during either day or night. While the total number of travelling segments was lower than that of stationary segments, there were significantly more travelling segments recorded during the night.