The document discusses the conservation of the endangered Chatham Island black robin. It describes how in 1980 there was only one breeding pair left, but through innovative management like cross-fostering eggs to other bird species, the population has increased to between 250-300 birds now living on Mangere and Rangatira Islands. It highlights this as an internationally renowned success story in species recovery.
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Divides up the history of the earth based on life- forms that have existed during specific times since the creation of planet.
Is an important tool used to portray the history of the Earth.
Also known as the Great Dying .
96 percent of species died out.
Life on earth descended from the four percent that survived.
CAUSES: Asteroid impact, flood basalt eruptions, catastrophic methane release ,a drop in oxygen levels ,sea level fluctuations.
Ice melts in polar regions which is home to many animals like penguins and polar bears. Melted ice also leads to the rise in sea levels as well as submerging low-dying islands
Global warming gives rise to the El Niño and La Niña phenomenon which brings major disasters such as floods ,drought heatwaves ,and forest fires; destroying habitats and killing its inhabitants.
Change in temperature forces many species to flee from their comfortable habitat. They migrate and invade other territories that are similar to their old ones.
Increases in carbon dioxide concentration also cause our oceans to become more acidic .Acidic water dissolves the shells of many sea creatures such as crabs, shrimps, oysters ,and soon even coral reefs which are home to numerous marine lives.
The name dinosaur comes from the Greek words deinos (“terrible” or “fearfully great”) and sauros (“reptile” or “lizard”). The English anatomist Richard Owen proposed the formal term Dinosauria in 1842 to include three giant extinct animals (Megalosaurus, Iguanodon, and Hylaeosaurus) represented by large fossilized bones that had been unearthed at several locations in southern England during the early part of the 19th century. Owen recognized that these reptiles were far different from other known reptiles of the present and the past for three reasons: they were large yet obviously terrestrial, unlike the aquatic ichthyosaurs and plesiosaurs that were already known; they had five vertebrae in their hips, whereas most known reptiles have only two; and, rather than holding their limbs sprawled out to the side in the manner of lizards, dinosaurs held their limbs under the body in columnar fashion, like elephants and other large mammals. The extensive fossil record of genera and species is testimony that dinosaurs were diverse animals, with widely varying lifestyles and adaptations. Their remains are found in sedimentary rock layers (strata) dating to the Late Triassic Epoch (approximately 237 million to 201.3 million years ago). The abundance of their fossilized bones is substantive proof that dinosaurs were the dominant form of terrestrial animal life during the Mesozoic Era (about 252.2 million to 66 million years ago). It is likely that the known remains represent a very small fraction (probably less than 0.0001 percent) of all the individual dinosaurs that once lived. Before Richard Owen introduced the term Dinosauria in 1842, there was no concept of anything even like a dinosaur. Large fossilized bones quite probably had been observed long period by
9 Beautiful and Rare Species Found Only in AustraliaThe Aussie Way
The climate and huge terrain of Australia are as distinctive as the animals that inhabit it. And despite Australia’s abundance of lethal and dangerous creatures, you shouldn’t worry about them because everything has been done to ensure that everyone is safe.
Climate change and the effects of land clearing, which are tragically affecting life in Australia.
You can help maintain the natural ecosystem not just in Australia but all over the world by identifying tiny methods to reduce climate change and global warming.
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Kirti
1. BIRDWATCHING, BIRDWATCH
ER AND THE CHATHAM
ISLAND BIRD
The hobby of bird-watching
developed mostly in the 20th
century in developed
countries in the west.
Bird-watching or "birding" is an The growth of bird-watching
activity connected with the visual as a scientific sport was aided
observation and study of wild birds by the increasing availability
in their natural habitat. Birding of optical aids like binoculars
usually attracts the and the spotting scope.
educated, affluent and middle-
aged who are interested in wildlife
and are keen to travel and spend
time outdoors.
2. Ornithology And Some Of The
Famous Indian Ornithologists
Sálim Moizuddin Abdul Ali was an Indian
ornithologist and naturalist, Known as the
“birdman of India”. Salim Ali was among the
first Indians to conduct systematic bird surveys
across India and his bird books helped develop
ornithology. He was awarded India's second
highest civilian honour, the Padma Vibhushan in
1976. He created the Bharatpur bird
sanctuary, and prevented the destruction of
what is now the Silent Valley National Park.
Ornithologist
3. Chatham Island black robin (Petroica traversi)
The conservation of this robin
is an internationally renowned
success story. In 1980 there
were only five black robins in
the world, with just a single
breeding pair left. The survival
of the species hinged on the
last pair. A desperate and
innovative management
regime was quickly put into
action that resulted in a
successful population
turnaround. This small robin
has pure black plumage and a
short, slender bill.
This species is affected by global
climate change.
4. The Black Thrush is a species
of bird in the Turdidae family.
It was formerly known as the
Black Robin. The average life expectancy of a
It is found in El Salvador, black robin is four years.
Guatemala, Honduras,
and Mexico. Its natural habitat
Black robins spend the majority of
is subtropical or tropical moist their time in the lower branches of
montane forest. the forest away from strong
winds, or foraging amongst the leaf
litter on the forest floor.
They are insectivores; feeding on a
wide range of invertebrates
including cockroaches, worms and
the endemic weta (a type of cricket).
5. Today a population of around 250 to
300 birds exists on two small islands:
Mangere and Rangatira.
The New Zealand Wildlife Service
began 'cross-fostering' eggs and young
from this remaining pair of robins
(known as 'old blue' and 'old yellow') to
another species in an effort to increase
productivity.
This innovative approach was a
resounding success; today between 250
and 300 birds are distributed on
Mangere and Rangatira Islands and
there are plans to introduce a
population to the much larger Pitt
Island once it has been cleared of pests.
This is a remarkable conservation
success story and an example of what
can be achieved.
6. THE CHATHAM ISLANDS
Mangere Island
Mangere
Situated to the West of Pitt
Island, Mangere is 113ha in
area, surrounded by cliffs and
rises to 286m at its summit. It was
purchased by the Crown in 1966
after having been farmed, which
resulted in the widespread
clearance of most of the
vegetation.
Rangatira (South East Island)
Rangatira
Rangatira has been described as
one of the world's premier bird
islands. Like Mangere, it is a
Nature Reserve managed by the
Department of Conservation.
Purchased by the Crown in 1953.
7. SOME OTHER TYPES OF ROBINS
Flame robin
Snow Mountain robin(Petroica (Petroica phoenicea)
archboldi)
Orange-billed babbler