South Georgia Diving Petrel
A species of Diving Petrels Scientific name : Pelecanoides georgicus Genus : Diving Petrels
South Georgia Diving Petrel, A species of Diving Petrels
Botanical name: Pelecanoides georgicus
Genus: Diving Petrels
Content
Description General Info
Description
The South Georgia diving petrel is a small, plump petrel, 180 to 220 mm (7.1–8.7 in) in length and weighing around 90 to 150 g (3.2–5.3 oz). Its plumage is black above and dull white below, and it has a stubby black bill with pale blue edges. The wings have thin white strips. The face and neck can be more brown than black. The legs are blue with posterior black lines down the tarsi. Unless seen very close, it is almost indistinguishable from the common diving petrel; the common diving petrel has brown inner web primary feathers, whereas the South Georgia diving petrel has light inner web feathering. Common diving petrels have smaller and narrower bills than the South Georgia diving petrel, and there are also slight size differences.
Size
21 cm
Feeding Habits
South Georgia Diving Petrel's diet primarily includes planktonic crustaceans like krill and copepods, supplemented by small fish and cephalopods. Specializing in euphausiids, they forage with pursuit dives, reaching up to 50m. Ecologically segregated from close relatives, south Georgia Diving Petrel feeds chicks predominantly on Thysanoessa and Euphausia superba, with foraging ranges restricted to 28–100km from breeding sites.
Habitat
The habitat of south Georgia Diving Petrel encompasses offshore pelagic zones in cool marine waters, often found at a considerable distance from land compared to other diving-petrels. It breeds on remote oceanic islands, nesting in areas with scree or volcanic ash, and sometimes under sand dunes on flatter terrains.
Dite type
Piscivorous
General Info
Behavior
The South Georgia diving petrel feeds primarily on planktonic crustaceans, particularly krill, but will also feed on small fish and young cephalopods. Breeding season is October–February. The female lays one egg that is incubated for 44–52 days. Fledging occurs in 43–60 days. Threats to the South Georgia diving petrel include skuas, cats and rats. South Georgia diving petrels are noted for their diving capabilities: "The most proficient divers of the order Procellariformes are likely to be the diving petrels in the family Pelecanoididae." Dive depths for the South Georgia diving petrel have been recorded to 48.6 m (159 ft), with most in the range of 20.4 to 24.4 m (67–80 ft).
Distribution Area
This species nests in colonies on Subantarctic islands. It breeds on South Georgia in the south Atlantic and on the Prince Edward Islands, Crozet Islands, Kerguelen Islands and Heard Island and McDonald Islands in the southern Indian Ocean. It disperses to surrounding seas and vagrants have been recorded in the Falkland Islands and Australia. While 1.5 m (4.9 ft) nesting burrows are usually built on scree slopes above the vegetation line, they are occasionally built on flat land.
Scientific Classification
Phylum
Chordates Class
Birds Order
Albatrosses and Petrels Family
Pelecanoididae Genus
Diving Petrels Species
South Georgia Diving Petrel