On 15th September Blue XD backtracked 4o km NW in late afternoon, then next day set off strongly SSW over the deserts. Roosted that night in Mauritania near Bir Moghrein. On 17th September migrated west of Fderik mine and roosted that night in southern Sahara; on 18th and 19th flew steadily SSW through Mauritania and at 1444GMT on 20th September flew over the River Senegal. Just kept heading SSW without stopping to fish. Another master class in crossing the Sahara.
September 16th – 20th
