www.gull-research.org

It may be a good idea too check you local harbour . within the last week 6 ivory gulls have turn up in WP . 3 in the Uk ,1 in Icland ,1 in Norway , 1 in Sweden . Here is the bird from sweden picture are from Båstads hamn .

I had this gull in Gilleleje harbour, Denmark 10.11.2013 . For me the gull looks like a caspian gull , the voice from the bird did also fit cachinnans When it came to bread . Other people have id the gull to a michahellis . http://www.netfugl.dk/pictures.php?id=showpicture&picture_id=56999#373528418...

hi Boris. These German color ring has been sponsored for a ringing project in belarus. they are probable ringed in a breeding colony on the roof of the gatovo industrial Tannery south of minsk
viewtopic.php?f=30&t=853

L2L2 is from Lithuanian http://www.cr-birding.org/node/363

smithsonianus or argentatus ? http://haaningsblog.blogspot.dk/

well besides the bird shows black and white tail , there is nothing in this gull that exclude argentatus . kjeld t. pedersen id. the bird as michahellis when he ringed the gull http://www.dofbasen.dk/popobs.php?obs=obs&obsid=12014205 . a few days after I saw the bird and thought it must be a herring...

Yellow-legget gull or herring gull ? http://www.dofbasen.dk/popobs.php?obsid ... 62&obs=obs ringed 2012-12-08 enghave parken , copenhagen denmark .

The photo above was taken 15.11.2009 rødvig havn in denmark , same date it was ringed by kjeld.t.pedersen . Here are some more photos from denmark from the same bird http://www.fugleognatur.dk/gallery.asp?mode=ShowLarge&ID=114339 + voice recording of this one and a second bird http://www.xeno-canto....

Rødvig Havn 8.12.2011 Denmark

Here are some better pictyres of the bird http://uk400clubrarebirdalert.blogspot. ... truly.html