Rhinoceros auklet7/17/2023 ![]() ![]() This horn is only present in breeding adults, and like the elaborate sheath on the bill of puffins is shed every year. ![]() Its name is derived from a horn-like extension of the beak (the anatomic term for this extension is the rhamphotheca). It ranges widely across the North Pacific, feeding on small fish and nesting in colonies. Given its close relationship with the puffins, the common name rhinoceros puffin has been proposed for the species. It is the only extant species of the genus Cerorhinca. ![]() The rhinoceros auklet ( Cerorhinca monocerata) is a seabird and a close relative of the puffins. ![]()
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