Status
Overall this species is not considered threatened and consequently listed as Least Concern by BirdLife International and IUCN. Most subspecies are relatively common with estimates of 10.000+ pairs of each, the exceptions being P. (a.) nivalis with approximately 1.000 pairs and P. (a.) purpurascens with approximately 760 pairs (has perhaps declined slightly from this figure in recent years). If these are considered separate species, it is likely one – or both – would qualify for a threatened status, and they are considered Vulnerable by DEWHA. Due to their small ranges and relatively small populations, they are highly susceptible to pollution and climate changes, and chance events such as storms. Deaths due to strikes with radio masts have been recorded in both, and are quite common in P. (a.) purpurascens. Introduced predators potentially also present a serious threat, though none are currently present on Heard Island and cats have been eradicated from Macquarie Island, leaving "only" rats, which, however, have been observed at nests of P. (a.) purpurascens.
Read more about this topic: Imperial Shag
Famous quotes containing the word status:
“[In early adolescence] she becomes acutely aware of herself as a being perceived by others, judged by others, though she herself is the harshest judge, quick to list her physical flaws, quick to undervalue and under-rate herself not only in terms of physical appearance but across a wide range of talents, capacities and even social status, whereas boys of the same age will cite their abilities, their talents and their social status pretty accurately.”
—Terri Apter (20th century)
“As a work of art it has the same status as a long conversation between two not very bright drunks.”
—Clive James (b. 1939)
“His Majesty’s Government view with favour the establishment in Palestine of a national home for the Jewish people, and will use their best endeavours to facilitate the achievement of this object, it being clearly understood that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities in Palestine, or the rights and political status enjoyed by Jews in any other country.”
—A.J. (Arthur James)