Nasal saddled Pochard

No light-green nasal-saddle project is listed on cr-birding, but a sky blue colour is listed there (within the French ringing scheme) - they do use a first letter F and I can imagine sky blue fading to green, especially since this project is in its 10th year. I'm sure it will be worth emailing the address found on this page for the project to check whether it's theirs:

Posted June 13th, 2014 at 11:03 am by Lowell Mills in Bird News