Wednesday, 25 February 2015

5 EXTINCT BIRDS AND POSSIBLE REASONS FOR THEIR EXTINCTION

1. Extinct bird species: Dodo



Dodo: Pinterest
The dodo was a flightless bird that uniquely inhabited the island of Mauritius found in the Indian Ocean. The dodo was said to be related to pigeons and doves and was described as being around 3.3 feet tall and weighing about 20 kg. In 1598, Dutch sailors came across these flightless birds in the island and immediately saw its potential for meat, as they were starving by the time they reached land. It was hunted to extinction for its meat that wasn’t that great in terms of taste. Nevertheless by 1681, the hungry Dutch sailors had contributed a big portion in its extinction, barely leaving a single sign of the dodo’s existence. Because of lack of any clue that may suggest its existence, it was left forgotten as a mythical creature. This remained as such until the 19th century, when research was conducted on some of the last surviving species that had been taken to Europe. From then on, some remains and fossils of dodos were discovered in Mauritius.



2. Extinct bird species: Great Auk


Great Auk: Pinterest
The Great Auk was a large flightless species of penguins living in the North Atlantic rocky coasts and islands of the world and was believed to be in large numbers in the cold regions of Iceland, Greenland, Norway and Great Britain.It is depicted by the white fur on its belly, its black back and a thick hooked beak. The Great Auk was about 31 inches tall and weighing around 5 kg. Although the Great Auk was the only said species of genus Pinguinus to survive till recent times, it eventually became extinct in the middle of the 19th century due to excessive hunting. It was a source of food and also had a symbolic value to the Native Americans who buried the great auk bones together with the dead. Even the early Europeans who came to America hunted the Auks for food and used them as bait in fishing. Like most extinct species of birds, the Great Auk was hunted to extinction.

 3. Extinct bird species: Mauritius Blue Pigeon



Blue Pigeon: Pinterest
The Mauritius blue pigeon, endemic to Mauritius Island, is a striking bird, with a pearly white elongated neck, a vivid red tail and velvety blue body. Possibly being an omnivore, it was said to feed on fresh water mollusks and fruit.
It was first described in 1602 and the Dutch sailors, who landed in Mauritius, were glad to have a change in diet from eating the unappetizing dodo meat. Thus, it was largely hunted and eaten, thereby greatly diminishing the numbers of these pigeons.
Other reasons for extinction include; the pigeons hunted as a source of food by
 refugee slaves, introduction of predators like the Crab-eating Macaques and destruction of the pigeon’s natural habitat.
By the 1830’s it was easy to conclude that the Mauritius Blue Pigeon had forever disappeared and would never be seen again.

4. Extinct bird species: Laughing owl


Laughing owl: Pinterest
The Laughing Owl was a species of owl of the genus Sceloglaux, which means scoundrel owl, possibly referring to its malicious way of hooting.It was identified by its reddish brown plumage, with a white face and deep orange eyes. The Laughing Owl was about 36 cm tall, weighing 600 grams, with the males being of a relatively smaller size than the females.
Originating from New Zealand, the Laughing Owl was said to be in plenty by the time Europeans settlers landed in this island in 1840. Thereafter, it was hunted to gather specimens that were later sent to the British Museum. The exact reasons for extinction of the Laughing Owl are rather mysterious. But the invasion of Weasels and stouts might have brought in direct competition for food and thereby wiped out the bird species.
The Laughing Owl was popularly known for its crazy maniacal calls that echoed through the forests particularly on dark rainy nights.
The last sighting of the Laughing Owl was a dead specimen believed to have been found in Canterbury in 1914. But more and more unconfirmed sightings of the Laughing Owl have been reported; in the 1940’s a Laughing Owl was spotted in Pakahi near Opotiki, a town found in the North Island of New Zealand


5. Extinct bird species: Passenger Pigeon



Passenger Pigeon: Pinterest
The story of the now extinct passenger pigeon is one of the saddest extinct  birds’ stories. This abundant bird species was wonderfully social and lived in great flocks. It largely inhabited the lush forests of North America before was wiped off the face of this earth in the early 20th century.
The passenger pigeon was principally hunted down as a source of food especially when its meat was capitalized in the 19th century as food for the poor slaves, brought in from Africa.Due to man’s intrusion of the forests in order to create space for industrialization, the friendly Passenger Pigeons were annihilated and their free luxuriant forestlands burned down.
The last actual Passenger Pigeon, named Martha, died in the Cincinnati Zoo, Ohio, in 1914. A song entitled “Martha; the Last of the Passenger Pigeons,” is dedicated to Martha, the last of the Passenger Pigeon species to live on this earth. She must have lived an extremely lonely life, with all her relatives forever gone. 

 This post is mainly attributed to Rehana Stormme.

CAUSES OF EXTINCTION OF ANIMALS.

1. SELECTIVE HUNTING


Image: national geographic
Most humans hunt to get selected types of animals. This causes certain types of animals to become rare because they are being killed everyday and are failing to reproduce.








2. DEFORESTATION

Image: BBC
Deforestation occurs via logging or burning, and there are four main motives that fuel the chainsaws and stoke the fires: wood for fuel usage, lumber for construction, land clearance for plantation or ranch development, and urban expansion. Forests provide vital shelter and nesting structures and a bounty of food for animals and if it is destroyed they die.

3.PESTICIDES


Image: galleryhip.com
At least 5 billion pounds of pesticides are manufactured each year; 20% is used within the United States or Western Europe. Per capita, the most frequent users of pesticides are the monoculture farms of Central America, (such as banana plantations) as well as the large producers of cereal grains and fruit in Brazil, the US, and France.
Common ways in which pesticides damage animal populations are death by exposure from a concentrated dose, bioaccumulation (fat-soluble chemicals increase in concentration with every step up the food chain), hormonal effects, and fewer or weaker eggs. They can also destroy of prey organisms and damage plants used by birds for feeding, roosting, and nesting.

4. INVASIVE OR INTRODUCED PESTS


Image: gettyimages
 People use a lot of different crops and domesticated animals for farming, and a lot more animals and plants (like mice, rats, cockroaches and weeds) live and thrive around us even if we don't want them to!
As people have spread around the world, they have taken many of these species with them, either deliberately or accidentally.
But introduced species often have a very harmful effect on native species. For example, 24 rabbits were introduced to Australia in 1859 for hunting. Rabbits breed quickly, and, in an environment without any of their natural predators, their numbers increased so quickly that in less than a hundred years there were 600 million across the whole continent! The rabbits took over the resources and habitats of native species, like the bandicoot, which is now endangered.


5. POLLUTION


Image: framepool.com
Pollution contaminates the natural environment with harmful substances produced by human activity.
An obvious example of pollution is an oil spill. This happens when oil is released accidentally into the sea from a tanker, pipeline or refinery. The spill forms a thin layer of oil, called a slick, poisoning sea life, and damaging the fur and feathers of seabirds and mammals.





6. POPULATION

Image: buzzle.com
The growth of the human population is the biggest threat to natural environments today. One hundred years ago, there were one billion people in the world. Now there are over six billion!Quite simply, there isn't enough room for natural environments to coexist with all these people, and the land they need to provide them with food and shelter.



7.OVER-HUNTING

Image: creativetravelphoto.com
Many of the world's biggest and most impressive animals, such as whales, elephants, rhinos and tigers, are now all rare because they were hunted heavily in the past.
People wanted whale oil and whale meat, elephant ivory, and rhino and tiger trophies. Although all of these animals are now protected by law from excess hunting, illegal poaching still continues.

ENDANGERED PLANT NAMES

Abronia macrocarpa (large-fruited sand verbena)
Abutilon eremitopetalum (hidden-petal Indian mallow)
Abutilon menziesii (koʻoloaʻula)
Abutilon sandwicense (greenflower Indian mallow)
Acaena exigua (liliwai)
Acanthomintha ilicifolia (San Diego thornmint)
Arctostaphylos morroensis (Morro manzanita)
Arctostaphylos myrtifolia (Ione manzanita)
Arctostaphylos pallida (pallid manzanita)
Arenaria paludicola (marsh sandwort)
Arenaria ursina (Bear Valley sandwort)
Argyroxiphium kauense (Mauna Loa silversword)
Aristida chaseae (Chase's threeawn)
Aristida portoricensis (pelos del diablo)
Asclepias meadii (Mead's milkweed)
Asimina tetramera (four-petal pawpaw)
Astragalus albens (Cushenbury milkvetch)
Astragalus ampullarioides (Shivwits milkvetch)
Bidens wiebkei (Molokaʻi koʻokoʻolau)
Blennosperma bakeri (Sonoma sunshine)
Boechera hoffmannii (Hoffmann's rockcress)
Boltonia decurrens (decurrent false aster)
Bonamia grandiflora (Florida lady's nightcap)
Bonamia menziesii (Hawaii lady's nightcap)
 Galium buxifolium (box bedstraw)
Gardenia mannii (nānū)
Geranium arboreum (Hawaiian red-flowered geranium)
Geranium kauaiense (Kauai geranium)
Geranium multiflorum (manyflowered cranesbill)
Gesneria pauciflora (yerba maricao de cueva)
Geum radiatum (spreading avens)
Goetzea elegans (matabuey)
Gouania hillebrandii (hairyfruit chewstick)
Gouania meyenii (smoothfruit chewstick)
Gouania vitifolia (Oahu chewstick)
Gratiola amphiantha (pool sprite)
Grindelia fraxino-pratensis (Ash Meadows gumplant)
Hackelia venusta (showy stickseed)
Halophila johnsonii (Johnson's seagrass)
Harperocallis flava (Harper's beauty)
Harrisia fragrans (fragrant prickly apple)
Kadua parvula (rockface starviolet)
Kadua st.-johnii (Nā Pali beach starviolet)
Helenium virginicum (Virginia sneezeweed)
Mahonia nevinii (Nevin's barberry)
Minuartia cumberlandensis (Cumberland sandwort)
Schenkia sebaeoides (lavaslope centaury)
Zeltnera namophila (spring-loving centaury)

Images: gardeningclan.com















Tuesday, 24 February 2015

GOOD NEWS

Critically endangered Amur leopard doubles its population check out the story on the link below:
http://t.co/nPEoVpcWqD

Amur Leopard: gettyimages

IMAGES OF ENDANGERED SPECIES

































Images: worldwildlife.org

NAMES OF ENDANGERED SPECIES

COMMON NAME SCIENTIFIC NAMES                                              
Black Rhino Diceros bicornis Critically Endangered
Cross River Gorilla Gorilla gorilla diehli Critically Endangered
Hawksbill Turtle Eretmochelys imbricata Critically Endangered
Javan Rhino Rhinoceros sondaicus Critically Endangered
Leatherback Turtle Dermochelys coriacea Critically Endangered
Mountain Gorilla Gorilla beringei beringei Critically Endangered
Pangolin
Critically Endangered
Saola Pseudoryx nghetinhensis Critically Endangered
South China Tiger Panthera tigris amoyensis Critically Endangered
Sumatran Elephant Elephas maximus sumatranus Critically Endangered
Sumatran Orangutan Pongo abelii Critically Endangered
Sumatran Rhino Dicerorhinus sumatrensis Critically Endangered
Sumatran Tiger Panthera tigris sumatrae Critically Endangered
Vaquita Phocoena sinus Critically Endangered
Western Lowland Gorilla Gorilla gorilla gorilla Critically Endangered
Yangtze Finless Porpoise Neophocaena asiaeorientalis ssp. asiaeorientalis Critically Endangered
African Wild Dog Lycaon pictus Endangered
Amur Tiger Panthera tigris altaica Endangered
Asian Elephant Elephas maximus indicus Endangered
Bengal Tiger Panthera tigris tigris Endangered
Black Spider Monkey Ateles paniscus Endangered
Black-footed Ferret Mustela nigripes Endangered
Blue Whale Balaenoptera musculus Endangered
Bluefin Tuna Thunnus spp Endangered
Bonobo Pan paniscus Endangered
Bornean Orangutan Pongo pygmaeus Endangered
Borneo Pygmy Elephant Elephas maximus borneensis Endangered
Chimpanzee Pan troglodytes Endangered
Eastern Lowland Gorilla Gorilla beringei graueri Endangered
Fin Whale Balaenoptera physalus Endangered
Galápagos Penguin Spheniscus mendiculus Endangered
Ganges River Dolphin Platanista gangetica gangetica Endangered
Giant Panda Ailuropoda melanoleuca Endangered
Green Turtle Chelonia mydas Endangered
Hector's Dolphin Cephalorhynchus hectori Endangered
Humphead Wrasse Cheilinus undulatus Endangered
Indian Elephant Elephas maximus indicus Endangered
Indochinese Tiger Panthera tigris corbetti Endangered
Indus River Dolphin Platanista minor Endangered
Loggerhead Turtle Caretta caretta Endangered
Malayan Tiger Panthera tigris jacksoni Endangered
North Atlantic Right Whale Eubalaena glacialis Endangered
Orangutan Pongo abelii, Pongo pygmaeus Endangered
Sea Lions Zalophus wollebaeki Endangered
Sei Whale Balaenoptera borealis Endangered
Snow Leopard Panthera uncia Endangered
Sri Lankan Elephant Elephas maximus maximus Endangered
Tiger
Endangered
Whale Balaenoptera, Balaena, Eschrichtius, and Eubalaen Endangered