Figure 2. Geotracked migratory routes of four Icelandic whimbrels (Numenius phaeopus islandicus) between breeding sites in Iceland and wintering areas in West Africa during post-nuptial/autumn (left) and pre-nuptial/spring (right) migration.

Track sections are coloured as a function of ground speed. All individuals flew non-stop in Autumn whilst two made a stop-over in the UK or Ireland in Spring (details in Table 1). Maps created using R 3.1.2 using packages ggplot2, ggmap, raster and RgoogleMaps³³ (image data providers: US Dept. of State Geographer © 2016 Google) in WSG 48 coordinate reference system.