French: Sterne des Kerguelen German: Kerguelenseeschwalbe Spanish: Charrán de las Kerguelen
Subspecies and Distribution
S. v. mercuri
Voisin, 1971 – Prince Edward and Marion Is, and Crozet Is.
S. v. virgata
Cabanis, 1875 – Kerguelen Is (reported breeding on Heard I erroneous).
33 cm; wingspan 71 cm. Forehead to nape black; upperparts, including uppertail-coverts, smoky grey, with contrasting white rump; outer tail streamers grey, tail greyish;... read more
Calls include a harsh "chittick" and a long drawn out "keeeaaar".
Rocky, volcanic islands. Breeds on sparsely vegetated flat ground, either cliff tops or river flats... read more
Food and feeding
Fish, crustaceans, molluscs, earthworms, insects and spiders. Diet changes seasonally from mainly crustaceans in Sept, fish in Nov, insects... read more
Virtually unstudied. Returns to colony in Sept, and begins laying mid-Oct, continuing until Jan; peak breeding early Nov to mid-Dec, 2... read more
Sedentary. Remains around breeding sites. Movement away from islands not documented.
Status and conservation
Not globally threatened. Currently considered Near Threatened, and previously, Vulnerable. The global population has been estimated at 3,500–6,500 individuals.... read more
Only subscribers are able to see the bibliography. Login or Subscribe to get access to a lot of extra features!