French: Sterne de Trudeau German: Weißscheitel-Seeschwalbe Spanish: Charrán coroniblanco
Other common names:
Great Egg Harbor, New Jersey (probably in error)
Coast and interior of South America, breeding from SE Brazil and Uruguay to EC Argentina (S Buenos Aires, rarely to Santa Cruz), and in Chile (Aconcagua to Llanquihue).
35 cm; 146–160 g; wingspan 76–78 cm. Head and upper neck white, with black spot in front of eye and dark band behind; upperparts and upperwings pale grey, with... read more
The call is a series of rapid notes "je-je-je-je", or a short, grating "jeeer".
Fresh and saline wetlands, both inland and coastal. Breeds on vegetated lagoons of pampas... read more
Food and feeding
Small fish and insects. In Chile, feeds mainly on pejerrey (Austromenidia laticlavia). Of 84 fish prey observed during one study... read more
Virtually no data published. Recorded Oct in N, Nov in Buenos Aires, Dec in Chubut. One colony in a lagoon held 30–40 nests. Often... read more
Outside breeding season, ranges north on the Pacific coast, rarely as far as southern S Peru,... read more
Status and conservation
Not globally threatened (Least Concern). The global population is not known with any precision but is tentatively put within the range of up to 10,000 birds in the southwest... read more
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