Could someone help me to ID this immature Gull? Seen last sunday in very stormy weather in IJmuiden (North Sea coast). It was trying (in vain) to rob a Great Cormorant of its catch (seen in the first and last image). Very poor visibility and a great distance, my images are not very clear unfortunately.
The trailing light band on the inner primaries (but no apparent lighter 'window', that would point me to Herring or perhaps Caspian) and the presence of a clear dark trailing band on the secondaries (reminiscent of Caspian, but since the 'window' lacks, Caspian doesn't seem to fit) puzzle me. (The wing would be too light for either Great of Lesser Black-Backed?) Well, probably it's one of the mentioned Gulls after all and am I confusing myself with their characteristics...
Bye, Frank
The trailing light band on the inner primaries (but no apparent lighter 'window', that would point me to Herring or perhaps Caspian) and the presence of a clear dark trailing band on the secondaries (reminiscent of Caspian, but since the 'window' lacks, Caspian doesn't seem to fit) puzzle me. (The wing would be too light for either Great of Lesser Black-Backed?) Well, probably it's one of the mentioned Gulls after all and am I confusing myself with their characteristics...
Bye, Frank