المواضيع

 The Adelie penguin is a species of penguin characterized by black and white plumage and a small ring of white feathers surrounding each eye. During the warmer months, there are Adelie penguins Primarily in the numerous breeding colonies along the rocky, ice-free coasts of Antarctica; Colonies are also in the South Shetland Islands, South Orkney, and the South Sandwich Islands. During the winter months they migrate north to forage in open water areas in the ice pack.

 

Adelie penguin

Adelie penguin characteristics

Adelie penguins are as long as They are 70-73 cm (about 28-29 in) and weigh 4-6 kg (about 9-13 lb), with males being slightly longer and heavier than females. A continuous area of ​​black feathers covers the bird's head, throat, back and tail, while the ventral (anterior) side is entirely composed of white feathers. Apart from the prominent white eye ring, other distinguishing features include elongated feathers on the back of the head that can be raised to form a crest and beak colored in black and pale orange. In contrast, juveniles have white eye-rings and black eye-rings. The plumage of Adelie penguin chicks ranges from light gray to dark black.

 

Adelie penguin

predators and prey

Although Adelie penguins are able to descend approximately 170 meters (about 560 feet) below the ocean surface in search of prey, they prefer to hunt in the first 50 meters (about 165 feet) where the availability of light is greatest. Killer whales and seals feed on Adelie penguins The adult and the young at sea.

 

Reproduction season and life cycle

In preparation for the breeding season, unmarried males return to their breeding colonies to build small nests of stones. Arrival time is in late September, but often varies at different latitudes, with members of colonies in northern latitudes arriving first. After the females return from the sea a few days later, the males initiate what is called an orgasm display, a series of courtship behaviors that includes neck arching and beak thrusting, to attract a mate. Copulation occurs with the male standing on the female's back. If successful, two eggs are laid in late November to early December. Incubation, which alternates between both parents, occurs over the next 35 days. Likewise, when the eggs hatch, the parents take turns feeding and guarding the chicks. After about three weeks, both parents leave the nest to simultaneously search for food in the sea. Young people join the nursery , a group made up of several members of their group, for additional protection against predators as well as the cold. About two months after hatching, most young leave the nest to forage independently. The average age of sexual maturity for females is three years, while males are sexually mature at the age of four. Often both sexes return to their birth colony to mate. may birds liveAdelie penguins for up to 16 years.

 

Adelie penguin

Save type status

According to some accounts, there are more than 2.5 million breeding pairs of Adelie penguins In the world. Studies show that many Adelie penguins are on the rise. Much of this increase has been attributed to the breaking of ice shelves along certain parts of the Antarctic coast, particularly on the Antarctic Peninsula since the 1990s. The loss of ice cover has created an additional ice-free habitat for the Adelie penguins Since 1988 it has been listed as a species of least concern by the IUCN Red List of Threatened Species ..

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