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BiologyThe lava gull feeds on a wide variety of animals; crustaceans, baby marine iguanas, small fish and seabird eggs, and will also scavenge around fishing boats and at human settlements for offal and scraps. It is also known to feed on the placentas of sea lions. Feeding occurs along the shore, which it flies along at three to five meters while scanning for food, or whilst hovering over the water's surface, waiting to snatch any floating offal (2). The lava gull is a solitary nester that breeds throughout the year, with a peak between May and October. Within a large territory, two eggs are laid in a simple scrape nest (2).