Larosterna inca
The Inca Tern (Larosterna inca) is a striking seabird instantly recognizable by its distinctive white, curled facial plumes resembling a flowing mustache. This medium-sized tern typically measures 39-42 cm in length with a wingspan of 76-80 cm, sporting a uniform dark slate-gray plumage, complemented by a bright red bill with a yellow base and matching red legs and feet. The elegant "mustache" plumes, which extend from the bill base and curl backward, are its most unique and defining field ma...
These highly specialized terns primarily inhabit the rocky coastlines, offshore islands, and sea cliffs of the Humboldt Current region. They are strictly marine birds, found at sea level along the Pacific coast.
The diet of the Inca Tern consists almost exclusively of small fish, particularly anchovies (Engraulis ringens) and sardines, which they capture by plunge-diving. They also opportunistically scavenge fish scraps near fishing boats and marine mammal colonies.
Inca Terns are diurnal and highly social, often roosting and breeding in large, dense colonies on steep cliff faces, sea caves, or rocky islands. Their primary foraging strategy involves agile plunge-diving for small fish, frequently observed following fishing boats or hunting alongside other sea...
The Inca Tern is resident along the Pacific coast of South America, primarily inhabiting the cold, productive waters influenced by the Humboldt Current. Its continuous breeding and non-breeding range extends from northern Peru, roughly from La Libertad and Lambayeque regions, southwards along the...
Near Threatened
- The Inca Tern is the only species in the genus *Larosterna*, making it unique among terns. - Their distinctive white "mustache" plumes are a key feature, present year-round in adults and intensify in redness of bill and feet during breeding. - Named after the ancient Inca Empire, their distribu...