Mew Gull is slimmer, with a slender bill and a more rounder head with a friendlier-looking appearance. The upperwing would show a light 'window', caused by paler inner primaries. The upperwing would be much lighter in color too, including lighter greater coverts. See for example http://www.magikbirds.com/image.asp?title_id=524.
Vega Gull has that pale window as well and I guess would show more dark streaks on the head, neck, flanks and belly. Although immature gulls can be very variable.
The lack of a pale window and the dark greater coverts together with paler and almost whitish head and underparts fit a 2nd CY Heuglin's Gull. The underwing would appear paler too than it does on the picture but maybe that is due to a lack of light. Author: wilsondring Time: 23/01/2013 08:02
Thanks bart for confirmation.. Cheers
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