This is video about bar-tailed godwits, and dunlins, in Britain.
From the March 2007 newsletter of BirdLife in The Netherlands:
It is estimated that during the winter season, 700,000 to 900,000 waders and water birds are staying in the coastal zone of Guinea-Bissau; mainly curlew sandpipers, red knots [see also here; and here; and here and here], little stints and bar-tailed godwits [see also here and here and here].
That makes this country, after Mauretania (Banc d’Arguin), the most important wintering area of the African west coast.
Rare Temminck’s Stint Spotted at WWT Slimbridge Wetland Centre in the UK: here.