Lava gull  (Larus fuliginosus)

Description

There are less than 800 lava gulls alive, making this the rarest gull in the world (2). The name comes from its dark sooty-grey plumage, which is darkest on the wings and paler on the belly, and also because it spends much of its time on the lava rocks strewn on the shores of the Galapágos Islands (3). The bill and feet are black, and the head is almost black, with conspicuous white eyelids (4).

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