Light-mantled albatross-Phoebetria palpebrata - animals.worldmy.info

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Light-mantled albatross-Phoebetria palpebrata

Birds > Group of birds > Albatrosses
Light-mantled albatross (Phoebetria palpebrata)
Light-mantled albatross

TAXONOMY
Phoebetria palpebrata
J.R. Forster, 1785, south of Cape of Good Hope. Monotypic.
OTHER COMMON NAMES

English: Light-mantled sooty, gray-mantled albatross; French:
Albatros fuligineux; German: Graumantel-Rußalbatros; Spanish: Albatros Tiznado.
PHYSICAL CHARACTERISTICS

Wingspan 6.0–7.15 ft (183–218 cm); 6.1–8.1 lb (2.5–3.7 kg).
Small, all dark albatross with paler mantle and a partial white eye-ring. Bill black with pale blue sulcus line.
DISTRIBUTION

Widely distributed throughout the southern oceans breeding at
South Georgia, Marion, Prince Edward, Crozet, Kerguelen, Heard, Macquarie, Auckland, Campbell, and Antipodes Islands. Distributed at sea generally south of 40° latitude to the edges of Antarctica.
HABITAT

Marine. Generally breeding in isolated nests on sheltered steep
slopes or cliff ledges close to a rock face.
BEHAVIOR

Aerial displays and formation flying are a distinctive feature of
courtship and pair-bonding behavior. Mutual calling modulated in tone by the position of the head is an essential part of the displays. Does not have open or extended wing displays, but uses the long tail in display more than other albatrosses.
FEEDING ECOLOGY AND DIET

Mainly solitary at sea, feeding by surface seizing or surface

plunging, chiefly for cephalopods and krill. Sometimes fish and carrion including remains of birds at sea. Some observed interaction with commercial fishing.

REPRODUCTIVE BIOLOGY

Lays one egg between October and November with the 2 week laying period being shorter than other albatrosses except the dark-mantled sooty albatross. Incubation lasts for 65–72 days. Have the longest incubation shifts of any albatross. Hatching takes 3–5 days. Chicks are guarded by a parent for the first three weeks. Mean fledging varies between 140 days (Macquarie) and 170 days (Marion Island). Productivity variable. Monagamous. Generally classed as a biennial breeder. Starts breeding at 8–15 years. Adult annual mortality probably about 3%.

Light-mantled albatross breeding

CONSERVATION STATUS

Data Deficient, not globally threatened. Tentatively estimated to have a world population of 30,000 breeding pairs. Main causes of nesting failure seem to be starvation and desertion by parents, which along with the length of foraging stints suggests a species with distant and restricted food sources. Incidence of fisheries bycatch not large.

SIGNIFICANCE TO HUMANS
None known.

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