Page 158 - World of Animals - Book of Sharks & Ocean Predators
P. 158

Sharks & Ocean Predators
                               WorldMags.net

        33. The yellow-eyed                                                      34. The               38. A wild

                                                                                emperor              penguin lives
        penguin is the rarest                                                 stands over           up to 20 years

                                                                              a metre high           In the wild penguins live to
                                                                                                      between 15 and 20 years,
        So endangered that a dedicated   continental shelf, which lies roughly   The largest penguin species is   however in captivity that number
        conservation organisation has been set   1.6 kilometres (one mile) offshore and   the emperor penguin, which   is closer to 30 years. The offi  cial
        up for it, the yellow-eyed penguin is   extends out to 25 kilometres (16 miles).   averages 1.15 metres (3.8 feet)   record for the oldest captive
        the Earth’s rarest species of penguin,   Like all penguin species, their diet   in height, but can o  en surpass   penguin is 29 years, four months.

        with around 5,000 individuals extant   largely consists of fish, which the   a whopping 1.3 metres (4.3 feet),
        and 2,000 breeding pairs left in their   yellow-eyed harvest by diving down to   with these giants towering over
        native habitat. Despite being unique to   120 metres (394 feet) into the ocean   lesser species with ease.   39. All the sub-
        New Zealand, human development and   waters. They are also among the                          species lay
        interference has left the yellow-eyed   longest living penguin species, capable   35. They
        now most numerous on the country’s   of hitting 20 years in age. Males tend                  eggs on land
        southern-most islands.           to live longer than females, leaving the   mainly walk at   Despite all penguin species
         Yellow-eyed penguins hunt for food   species with a male-to-female ratio of   two miles    preferring a water habitat, they
        primarily over New Zealand’s nearby   2:1 after about ten years of age.                     always return each year during
                                                                                per hour           breeding season to lay their eggs
                                                                             Almost all penguins waddle at   on land, which take between 32
                                                                            around 3.2 kilometres per hour   and 68 days to hatch.
                                                                             (two miles per hour) on land.
                                                                            However, this rule is broken by   40. A group of
                                                                             the king penguin, which has a
                                                                            different gait and can walk at up  young chicks is

                                                                             to 5.6 kilometres per hour (3.5   called a creche
                                                                                 miles per hour).
                                                                                                   Penguin young sometimes group
                                                                                                   together in what is referred to as
                                                                              36. Only the          a creche. A group of fully grown
                                                                               adelie and          penguins, however, is referred to
                                                                                                           as a ra  .
                                                                                emperor
                                                                            actually live in             41. The
                                                                               Antarctica              chinstrap
                                                                              While penguins are o  en   is the most
                                                                             thought to inhabit Antarctica
                                                                            exclusively, only two types live   aggressive
                                                                             on the continent proper, with   Chinstrap penguins not only fight

                                                                            the emperor and adelie species   fiercely with one another during

                                                                             braving its extreme climate.  the breeding season, but also
                                                                                                     engage in thieving behaviour,

                                                                             37. Chicks are          o en stealing choice pebbles
                                                      Older and wiser                               from rival nests, to supplement
                                                      The yellow-eyed       not waterproof              their own homes.
                                                      penguin is also one
                                                      of the longest living   Adult penguin plumage isn’t
                                                      penguin species,      acquired until a year a  er birth.
                                                      frequently surpassing   Until then the chicks have thinner
                                                      20 years in age.
                                                                             and less waterproof plumage.
                                                                          42. They cover
                                                                          their feathers with
                     New Zealand
                                                 YELLOW-EYED PENGUIN      a protective oil
                                                 Megadyptes antipodes     All penguins have evolved a feature that helps
                                                 Class Aves
                                                                          them care for and maintain their feathers.
                             Yellow-eyed                                  Each penguin comes packing a uropygial
                              penguin range                               gland, a special oil-producing gland near the
                                                                          animal’s tail feathers that it can harvest with
                                                 Territory New Zealand    its beak and then spread over its body.   LEFT In order
                                                 Diet Carnivore                                                 to stay smooth
                                                 Lifespan 10-20 years      This oil acts as an extra barrier for   in the water,
          “They are also among                   Adult weight 5-8kg / 11-18lbs  the penguin, protecting its feathers   a penguin can
                                                 Conservation Status      from damage and ensuring its plumage   produce an oil
              the longest living                                          remains dry. The activity of harvesting the   to spread over
                                                                          gland and covering the feathers is referred to as   its body
              penguin species”                   ENDANGERED               preening, with penguins spending parts of each
                                                                          day working on their feathers. If a penguin works
                                                                          on another’s coat it’s referred to as allopreening.

        158
                                                      WorldMags.net
                                                      WorldMags.net
   153   154   155   156   157   158   159   160   161   162   163