Walvis Bay and Sandwich Harbour in Namibia to look for colour-ringed Bar-tailed Godwits and to determine the density of these colourringed birds. At the Royal Netherlands Institute for Sea Research on the island of Texel (NIOZ) we have been colour-ringing Bartailed Godwits since spring 2001 and have individually marked over 3400 birds. A large proportion (over 90%) of these birds belong to the subspecies Limosa lapponica taymyrensis which breeds in Siberia and winters in West Africa. With 3 resightings in Namibia, up to 2008, of birds ringed in the Netherlands we already knew that some individuals migrate that far south. For more information on this colour-ringing project see www.nioz.nl (go via research, Scientific departments and Marine Ecology to colour-rings).