For comparison: two barabensis standing behind a heuglini. The later primary moult of the heuglini is evident (P10 is still regrowing and so the mirror is visible on the underside of the far wing but is level only with the P6 tip of the near wing).
Gulping down fish at Dubai fish market
A rather slender individual, hence cachinnans-like in jizz.
Showing wing pattern. P10 has a silvery tongue which varies in shape and length - this is the longest I photographed
The number and size of primary mirrors varies: this has only a small mirror on P10, while others also have a mirror on P9. The most frequent pattern is for black to extend inwards to P5 as a broad black band, very like michahellis. Many, like this bird, also have a black spot on the outer web of P4
A heuglini for comparison. In March many heuglini are shaggy headed, show neck spots and are still regrowing P10 so are rather different to barabensis.
Fishing with Slender-billed Gulls.
And just to end with, here is a rather more compact, short-billed individual.
The number and size of primary mirrors varies: this has only a small mirror on P10, while others also have a mirror on P9. The most frequent pattern is for black to extend inwards to P5 as a broad black band, very like michahellis. Many, like this bird, also have a black spot on the outer web of P4
A heuglini for comparison. In March many heuglini are shaggy headed, show neck spots and are still regrowing P10 so are rather different to barabensis.
Fishing with Slender-billed Gulls.
And just to end with, here is a rather more compact, short-billed individual. 
1 comment:
Great man i love the pics and also am a great lover of birds specially seagulls and their way of living ...
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