The link to the study and details of the colour ringing project of waders based in the Netherlands is http://www.nioz.nl/nioz_nl/272a421d4f3323757c5744dc10d43f7b.php
I had a colour ringed godwit in 2007, contacted the research project and they sent a life history of the bird which, up until then, had only been seen in Texel.