Ferruginous Duck on Waters Edge

 in the dull and wet a nice female Ferruginous Duck associating with Tufted Ducks on Waters Edge this afternoon and on the water it looks fine - but flight shots revealed a green plastic ring on its right leg so a fence jumper but how many rare wildfowl are seen well enough to get both legs checked assuming that is that all rare wildfowl in captivity are ringed which they are not - so the long wait for another genuine Lincs Ferruginous Duck goes on -- the last local bird was a drake on Waters Edge in February - April 2001