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Message: <blockquote data-quote="Garrulous Jay" data-source="post: 3563724" data-attributes="member: 49028">Ok, so no takers for about a week now.  May "I make some suggestions? The larger bird with a orange red and very large bill which can be seen "Courtship feeding" in two of my photos is the Royal tern ("Gaviotin real" in the local Spanish dialect) Thalasseus maximus.The smaller tern with a very long yellow bill which seems to be the most numerous bird here, is the Southern form of Cabot's tern (also called Cayenne Tern). In the local Spanish this would be "Gaviotin pico amarillo".  The individual standing under the flying Royal tern in picture 2 is merely a late moulting bird which still retains its breeding head plumage. (Although my id is half-hearted as this bird appears to be larger than birds around it as is the other bird to its right which seems to be intermediate in its head moult)The smallest tern which has a dark line along the top edge of its folded wing and a shorter black beak is a the common tern Sterna hirundo.  There are several to be seen at the back left of picture 3.  This is very interesting to me who has never seen common terns in the southern hemisphere before as to just how different they look in their winter plumage.  I only see them in summer when they don't have dark feathers and the bill is blood red with a black tip.Finally, what should I make of the tern in picture 1 just to the left of the two courting Royals and just above the primaries of the Kelp gull, which appears to be smaller than the rest (based on the fact that it looks a lot smaller than birds behind it which are further from the camera? Another view of the same bird in picture 4.</blockquote>

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