French: Mouette de Patagonie German: Patagonienmöwe Spanish: Gaviota cahuil
M. H. C. Lichtenstein
SC Chile and SE Brazil (Rio Grande do Sul) S to Tierra del Fuego and Falkland Is. Winters N to N Chile and CE Brazil.
35–37 cm; 280–361 g. Two-year gull. The breeding adult has the frontal hood chocolate brown to dark brown, darker at rear, forming blackish margin; white... read more
Thin and high-pitched; a shrill, ternlike “zhree” and a short “kip kip kip”. Gives a harsh,... read more
Sea coasts, rivers, lakes and marshes; in winter also frequents sewage outfalls, slaughterhouses,... read more
Food and feeding
Largely insectivorous, but in Chile breeding birds feed mainly on small fish; takes offal and carrion when available. Forages over marshes... read more
Lays Nov–Dec in Chile, from late Oct to early Jan in Argentina, from Dec in Falkland Is. Sometimes solitary, but usually nests... read more
Relatively sedentary, dispersing to large rivers and coastal areas after breeding.
Status and conservation
Not globally threatened (Least Concern). Status poorly known. Total population probably 50,000–100,000 pairs and apparently increasing; The population in the ... read more
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