Northern Giant-petrel
A species of Giant petrels Scientific name : Macronectes halli Genus : Giant petrels
Northern Giant-petrel, A species of Giant petrels
Botanical name: Macronectes halli
Genus: Giant petrels
Content
Description General Info
Photo By Francesco Veronesi , used under CC-BY-SA-2.0 /Cropped and compressed from original 
Description
Macronectes halli averages 90 cm (35 in) in length, with a range of 80 to 95 cm (31 to 37 in), possessing a wingspan of 150 to 210 cm (59 to 83 in). Size is somewhat variable and this species is broadly the same size as its southern sister species. The largest-bodied colony is in the South Georgia Islands, where 56 males averaged 4.9 kg (11 lb) and 43 females average 3.72 kg (8.2 lb). The smallest-bodied are on the Chatham Islands, where 19 males averaged 3.66 kg (8.1 lb) and 21 females averaged 2.83 kg (6.2 lb). Overall, weight for the species can range from 2.5 to 5.8 kg (5.5 to 12.8 lb). Its plumage consists of grey-brown body with lighter coloured forehead, sides of face, and chin. Its bill is between 90 and 110 mm (3.5–4.3 in) long, slightly longer on average than the southern giant petrel, and is pinkish yellow with a brown tip. Its eyes are grey. The tarsus of the northern giant petrel is slightly longer on average than the southern species, but the southern has longer wings on average. The juvenile Macronectes halli is entirely dark brown and lightens as it ages. It can be differentiated from Macronectes giganteus by the top of the bill, which on the southern species is green. 
Size
94 cm
Colors
Brown
Black
Gray
White
Life Expectancy
20 years
Feeding Habits
Northern Giant-petrel primarily scavenge carrion, including dead penguins and pinnipeds, and hunt fish, krill, squid, and cephalopods. They forage around fishing boats for discards, exhibit aggression by preying on other seabirds, and show sexual dietary divergence, with males consuming more carrion and females focusing on pelagic prey.
Habitat
Northern Giant-petrel is a pelagic bird species that favors the marine environment of the Southern Ocean, predominantly ranging north of the Antarctic Convergence. It thrives in both coastal and open oceanic waters, frequenting areas near penguin rookeries and often seen at commercial fishing trawling grounds. For breeding, northern Giant-petrel selects islands, where it occupies grassy or rocky terrains, often with sheltering vegetation such as tussock grass. Its habitat spans a vast range of over 82 million square kilometers across the Southern Hemisphere.
Dite type
Scavenger
General Info
Species Status
In a 2001 estimate, this species had between 17,000 and 21,000 mature birds. This number has been increasing over the last two decades, after being expected to decrease. The IUCN thus downgraded them from near threatened to least concern. Recent surveys have shown that most locations are increasing in numbers, except for the Crozet Islands. This is probably due to increases in fish waste, better control on longline fishing, and more carrion from fur seals. Currently, this bird is listed on CMS Appendix II and ACAP Annex 1. Future plans are to maintain surveys and counting of individuals, research movement and migration, and continue lowering the bycatch deaths by current means and if needed newer measures through CCAMLR, CMS, and FAO.
Scientific Classification
Phylum
Chordates Class
Birds Order
Albatrosses and Petrels Family
Shearwaters and petrels Genus
Giant petrels Species
Northern Giant-petrel 
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