Showing posts with label Aves. Show all posts
Showing posts with label Aves. Show all posts

Southern Cassowary


True Wild Life | Southern Cassowary | The Southern Cassowary is a large bird that lives in New Guinea and Australia. They are flightless, but equipped with a strong kick. Their numbers continue to decline because of disappearing tropical rainforests and hunting. The Southern Cassowary also known as Double-wattled Cassowary, Australian Cassowary or Two-wattled Cassowary.


In appearance, the Cassowary looks like a short, heavily-built, black and blue Emu, Dromaius novaehollandiae. Both species are indeed closely related, belonging to the family Casuariidae, and both are flightless. The female Southern Cassowary selects a male to breed with and then lays a clutch of large green eggs in a scrape in the ground lined with plant material. Once the eggs are laid, the male is left in charge of the incubation and chick-rearing duties, while the female moves away, and may even breed again with another male. During the breeding season, the parental males are very aggressive, and attacks on humans have been recorded at this time.


The Southern Cassowary feeds mostly on fruit that has fallen to the ground. The Southern Cassowary will also eat anything from snails to small dead mammals. Southern Cassowaries normally feed alone. If two males should meet, they have a stand off where both birds stand tall, fluff up their feathers and rumble at each other until one retreats. If a male and female meet, the male will move away, as the female is dominant.


In parts of its range the Southern Cassowary is still relatively common, but numbers are decreasing because of habitat clearance and collisions with cars. Their fruit diet means they are commonly sighted in commercial orchards and gardens with fruit bearing trees. Interestingly, citrus fruit is not usually eaten. They can also be dangerous if cornered.

Okinawa Rail


True Wild Life | Okinawa Rail | The Okinawa Rail is a flightless bird that only lives on the main island of Okinawa. It is endemic to Okinawa Island in Japan where it is known as the Yanbaru Kuina. Its existence was only confirmed in 1978 and it was formally described in 1981 although unidentified rails had been recorded on the island since at least 1973 and local stories of a bird known as the agachi kumira may refer to this species.


It is a medium-sized and almost flightless rail with short wings and tail, olive-brown upperparts, black underparts with white bars and a red bill and legs. It occurs in subtropical moist forests and in neighbouring habitats. It nests and feeds on the ground but usually roosts in trees. It is classified as an endangered species and is threatened by habitat loss and introduced predators.


The Okinawa Rail  is a poor flyer but it can run rapidly. It spends most of its time on the ground but usually roosts in trees, climbing up to sleep on a branch or sloping trunk. In the morning, it preens and stretches before dropping straight to the ground. It is usually found in dense cover but comes into the open to bathe. It bathes for short bouts of 2-4 minutes before preening for 4-20 minutes. It feeds on lizards, amphibians, snails and large insects such as locusts. Food is mainly taken from the forest floor but may also be taken from shallow water.


The Okinawa Rail is in great danger of disappearing for other reasons: forests clearing and traffic accidents. But the conservation activities have not progressed much. One reason is that nobody really understands how the Okinawa Rail lives. Without knowing well about the creature, like where the Okinawa Rail lives, what it eats, or how it raises its children, and how far it travels, people cannot move forward with the conservation activities. Besides the Okinawa Rail, there are many other kinds of flightless birds that are suffering from the outside animals in which human have brought in.

Great Spotted Kiwi


True Wild Life | Great Spotted Kiwi | The Great Spotted Kiwi, is a species of kiwi endemic to the South Island of New Zealand.  It is the largest of the kiwi.  There are about 22,000 Great Spotted Kiwis in total, almost all in the more mountainous parts of northwest Nelson, the northwest coast, and the Southern Alps. A minority live on islands.


Great Spotted Kiwi are nocturnal, and will sleep during the day in burrows. At night, they feed on invertebrates and will also eat plants. Great Spotted Kiwi breed between June and March. The egg is the largest of all birds in proportion to the size of the bird. Chicks take 75 to 85 days to hatch, and after hatching, they are abandoned by their parents.


Because adult Great Spotted Kiwis are large and powerful, they are able to fend off most predators that attack them, such as stoats, ferrets, weasels, pigs, brushtails and cats, all of which are invasive species in New Zealand. However, dogs are able to kill even adults. Stoats, ferrets, possums, cats and dogs will feed on the eggs and chicks, meaning most chicks die within their first five months of life. Once the Great Spotted Kiwi was also preyed upon by the Haast's Eagle, which is now extinct.

Yellow-Eyed Penguin


True Wild Life | Yellow-Eyed Penguin | The yellow-eyed penguin is one of the few penguin species found north of the Antarctic Ocean, and as it's name suggests, this species of penguin is easily idenitfied by it's yellow coloured eyes and bright yellow band that runs from it's eyes round the back of the yellow-eyed penguin's head. The yellow-eyed penguin is found off the coast of the south island of New Zealand where this species gathers in colonies along the beaches and boulder fields. The yellow-eyed penguin is also found on a few of the islands of the main island including Stewart, Auckland and the Campbell Islands.


The yellow-eyed penguin generally searches for food up 10 miles offshore, and travels (on average) around 15 miles away from the colonies nesting site. The yellow-eyed penguin leaves the colony at dawn and returns the same evening during chick rearing, although may spend 2 or 3 days at sea at other times. The yellow-eyed penguin is one of the larger species of penguin with adult individuals reaching 75cm in height, with the males generally being slightly larger than the female yellow-eyed penguins. The yellow-eyed penguin was thought to have been closely related to the tiny little penguin found in a similar area, although recent research suggests that the two are actually fairly genetically different.


The yellow-eyed penguin is a carnivorous animal, that like all other penguin species, survives on a diet that is only comprised of marine animals. Krill and small crustaceans make up the bulk of the yellow-eyed penguin's diet along with larger organisms including squid and various species of fish. The yellow-eyed penguin is usually found nesting in the forests and scrub that line the New Zealand coast and although historically undisturbed, the yellow-eyed penguin now has a number of land-dwelling predators including cats, dogs and foxes along with rats and weasels that hunt their eggs.


On average, the yellow-eyed penguin breeds once a year, forming pairs that usually remain faithful to one another. The female yellow-eyed penguin lays two eggs in her nest in the forest which are incubated by both parents for up to a couple of months, when only one of the eggs will usually hatch. The yellow-eyed penguin chicks are fed and kept warm by their parents and remain with them until the chicks are nearly a year old. Today, the yellow-eyed penguin listed as an endangered animal with an estimated wild population of less than 4,000 individuals. It is now the rarest penguin in the world due to deforestation and the introduction of mammalian predators.

Vulture


True Wild Life | Vulture | The vulture is a large, carnivorous bird that is most well known for its scavenging nature. The vulture is one of the few types of bird that is found distributed so widely around the world, as vultures are found on every continent excluding the Antarctic and Australia and the islands that surround it. Different species of vultures of firstly classified into two groups, the old world vultures and the new world vultures. There are thought to be nearly 30 different species of vulture that are found worldwide.


The old world vultures are found in Asia, Europe and Africa with these species of vulture thought to be most closely related to eagles and hawks. The old world vulture is not thought to be closely related to the new world vulture and the old world vulture uses its spectacular sight alone in order to find food. The new world vultures are found in the Americas and although there are definitive similarities between the old world vulture and the new world vulture, they are believed to be connected through evolutionary status rather than DNA. The new world vultures tend to be slightly smaller than the old world vultures and use both sight and their excellent sense of smell in order to find their food.


All species of vulture are similar in the sense that they scavenge for their food whenever possible rather than killing it themselves. Vultures feed on the remains of dead animals and are never too fussy about what is left. Vultures are known to strip meat, skin and even feathers, leaving only the skeleton of the animal remaining. Although vultures are generally fairly solitary animals, groups of vultures are often seen circling prey from the sky above. This movement of the vultures is called a kettle and a group of vultures together is sometimes known as a venue.


Vultures have keen eyesight. It is believed they are able to spot a three-foot carcass from four miles away on the open plains. In some species, when an individual sees a carcass it begins to circle above it. This draws the attention of other vultures that then join in. The feces of the turkey vulture contains strong acids that kill many of the bacteria commonly associated with bird feces. Because of their diet, these birds are able to kill harmful bacteria and viruses with their stomach acids, and halt the potential spread of disease from rotting carcasses.

Turkey


True Wild Life | Turkey | The turkey is a large bird that is closely related to other game birds such as pheasants, chickens and quails. The turkey has become famous across the western world as being a special meal on large family occasions including Christmas and Thanksgiving. Despite their large size, turkeys are surprisingly adept fliers and can be seen flying beneath the forest canopy looking for somewhere to perch. Although turkeys do nest in the trees, they are most commonly found in open forests, woodlands and grasslands.

There are two different species of turkey which are the wild turkey and the ocellated turkey. The wild turkey is found naturally in the open forests of North America and is the heaviest of all of the game bird species. The ocellated turkey is found in south-east Mexico and although the same size as the wild turkey, the ocellated turkey is roughly half the weight of the wild turkey. The wild turkey is a large, round looking bird that has long, thin legs with three toes on each foot to help with balance and for scratching around in the dirt. The male wild turkey has a red, featherless head and throat which has small growths on it known as caruncles.


The ocellated turkey is a more elegant looking bird and, although closely related to the wild turkey, the ocellated turkey is very similar in appearance to a female peacock. The ocellated turkey has a narrow body and long legs, and the males have featherless necks and heads which can be red or blue in colour and are often more subtle than the those of the male wild turkeys. The turkey is an omnivorous animal meaning that it eats both plants and plant matter, and other animals. The turkey primarily eats nuts, seeds, fruits, berries and insects which is often finds whilst scratching around on the forest floor. The turkey also eats small reptiles, amphibians and even rodents should it get the chance.


Despite its large size, both species of turkey have a number of predators within their natural environment. Foxes, snakes, raccoons, wildcats and humans are the most common predators of the turkey. During the mating season, male turkeys make gobbling noises in order to try and attract a female turkey to mate with. The female turkey finds somewhere safe to make her nest and lays between 6 and 12 eggs which hatch after an incubation period of about a month. Today, the turkey is one of the most popular meats to eat on festive occasions and is farmed in large numbers across the western world. It is thought that over 250 million turkeys are farmed in the United States every year!

Toucan


True Wild Life | Toucan | The toucan is a medium-sized bird native to the rain forests of central and South America and the Caribbean. There are more than 40 different species of toucan that inhabit the South American jungles today. The toucan is best known for it's large colourful beak that despite it's large size, is surprisingly light due to the fact that it is made of a substance called keratin (the same substance that makes up the nails and hair of many animals including humans) . The toucan's beak measures around half the toucans body length and is used for mating, feeding and defence purposes. The toucan's bill however, is not particularly strong and so it is used more to intimidate predators rather than to fight them off.


The toucan only has small wings as it dwells in forests and therefore do not need to travel large distances. The toucan's wingspan is roughly the same length as the toucans body. Although the toucan is able to fly, the toucan is not very good at flying and cannot be in the air for very long. Instead of using their wings to get around, the toucan hops between the tree branches using it curved toes and sharp claws to get a good grip on the narrow surface that it holds on to. Toucans are omnivorous birds and feed on a mixture of plants and animals. Toucans eat fruits, berries, nuts and seeds along with eggs, insects and small mammals and reptiles. The primary source of food for the toucan is the fruit which grows on the trees where the toucan lives.


Toucans have a number of predators in the South American jungle including humans, large birds of prey and wild cats. Weasels, snakes and rats tend to prey more on the eggs of the toucan rather than the toucan itself (many small animals are generally intimidated by the toucan's large bill). Although toucans are generally solitary when feeding, toucans often live in small groups of around 6 or 7 birds. The bright colours of the toucan gives the toucan camouflage in the colourful rainforest canopy. However, due to their bright colours, toucans are often captured and sold as pets with toucans being popular animals in the exotic pet trade.


Toucans build their nest in trees in lay around 3 eggs. When the toucan chicks hatch, both the male toucan and the female toucan help to feed them and protect them from predators. The toucan chicks are born with small beaks that don't reach their full size for at least a few months.

Tawny Owl


True Wild Life | Tawny Owl | The tawny owl is a small to medium sized bird of prey that is found across Europe and in parts of Asia but tawny owls are mainly found in woodlands across Eurasia. The tawny owl is the most widespread owl in Europe and is the most of common bird of prey found in the UK. Tawny owls tend to be around 40cm tall with a wingspan of about 100cm, with the tawny owl therefore being a much stockier bird than many other species of owl in the world.


The tawny owl is a nocturnal bird of prey, that takes advantage of their fantastic night vision to quickly catch their prey. Tawny owls prey on small rodents such as voles and mice, and also insects and small reptiles. In the same way as other species of owl, the tawny owl swallows it's prey whole and then regurgitates the bones that it cannot digest within a few hours of eating, in the form of a small pellet. Typically, tawny owls can be found nesting in tree holes during the daylight hours when they are resting. During the breeding season in the early spring, the male tawny owls can be seen hunting during the day as well as at night as they are collecting food to present to their mate.


Tawny owls are known to mate for life although this is not always the case. The female tawny owl lays an average of 3 eggs in the late spring to early summer and incubates her eggs while the male tawny owl brings her food. The tawny owl chicks hatch out of their eggs after an incubation period of around a month. The tawny owl chicks are reared by their parents until they are usually around 2 months old, although it is not uncommon for the tawny owl chicks to be looked after until they are nearly 3 months of age.


Due to the fact that tawny owls are relatively small birds (particularly in comparison to other birds of prey), the tawny owl has a number of natural predators within it's environment. Predators of the tawny owl include dogs, cats and foxes along with birds of prey such as hawks, eagles, buzzards and even larger species of owl. Rats and squirrels are the main predators of the tawny owl's eggs. Tawny owls inhabit dense forest and woodland where they cannot be disturbed resting during the day. During the night, tawny owls can often be heard making noises such as hooting and screeching which they do to communicate with other tawny owls, to mark their territory and to find a mate.

Swan


True Wild Life | Swan | The swan is a large aquatic bird closely related to geese and ducks. The swan is known for it's fierce temperament and the swans incredibly strong wings which are said to be able to cause dangerous (sometimes fatal) injuries to any animal the swan feels threatened by. The swan is found on both sides of the Equator across the Northern and Southern Hemispheres. The northern swan is generally white in colour with an orange beak and the southern swan tends to be a mixture of white and black in colour with red, orange or black beaks.


The Australian black swan has been noted to only swim with one leg, the other being tucked above it's tail. This helps the swan to change direction more smoothly when the swan is swimming on the surface of the water, should the swan spot food or even an oncoming predator. Swans are omnivorous birds but have a very vegetarian diet. Swans eat underwater vegetation such as seaweed and aquatic plants when they are on the water and a mixture of plants, seeds and berries when they are on land. Swans also eat insects both water and land based and the occasional small fish.


Due to their large size, swans have few natural predators in the wild. The swan's main predator is the human who hunts the swan for it's meat and it's feathers. Other predators of the swan include wolves, raccoons and foxes they prey both on the swan itself but also on it's eggs. Although swans do not mate for life, couples establish strong bonds between one another and can often mate for a few years. Swans build their nests on land out of twigs and leaves, and the female swan lays between 3 and 9 eggs. The baby swans (known as cygnets) hatch out of their eggs after an incubation of just over a month. The cygnets are often on the water with their mother swan within a couple of days and stay close to her for both protection and warmth. The mother swan will guard her baby swans furiously from predators or any animal that she believes is a threat.


Swans have many adaptations in order to successfully survive life on the water such as their streamline body shape, long neck and webbed feet. The wings of the swan are also very strong meaning that the swan is one of the few heavy birds that is able to fly, even if it is only a short distance. There are around 7 different species of swan found around the world. The size, colour and behaviour a swan individual is largely dependent on it's species and the area in which it lives.

Today swans are a threatened species of animal mainly due to hunting and habitat loss. Pollution (mainly water pollution) is also a major reason as why the swan populations are declining. Humans kept swans for many years for their meat, but today have more respect for the conservation of the swan and keep more sustainable animal food sources.

Sparrow


True Wild Life | Sparrow | Sparrows are a group of small sized birds that are found in woodlands and across farmlands all around the world. Today, there are thought to be 140 different species of sparrow spread throughout almost every continent. Historically, the true sparrows were found throughout Europe and in parts of Asia and Northern Africa. However, human travellers that settled on other continents including Australia and America introduced sparrows to these areas, where they are now considered to be part of the native wildlife.


Sparrows are generally small sized birds that can be easily identified by their smoothly rounded heads. Sparrows range in size from the Chestnut sparrow found in Africa, which is just over 10cm in height, to the Parrot-billed sparrow (also found in Africa) that grows to more than 18cm tall. Sparrows are omnivorous birds that mainly eat seeds and substitute their diet with berries, fruits and small insects. Some sparrow species have also adapted to life in the city where like gulls and pigeons, these plump little birds are known to eat almost anything that they can find.


Due to their small size, sparrows are prey to numerous predators within their native environments all around the world. Cats, dogs, snakes, foxes and birds of prey are just a handful of the natural predators of the sparrow in the wild. Sparrows breed when the weather begins to warm in the spring, when female sparrows make nests in trees and rafters in which to lay their eggs (an average of 4-5 are laid per clutch). The female sparrow incubates her eggs which hatch in only a couple of weeks, when the vulnerable chicks are cared for until they are strong enough to fledge (leave the nest).


Today, there is little concern over the sparrow populations although it is possible that populations will be affected by the ever changing weather conditions as a result of global warming and therefore, drastic climate change.

Snowy Owl


True Wild Life | Snowy Owl | The snowy owl is also known as the Arctic owl or the great white owl. The snowy owl is primarily found within the Arctic Circle with the range of the snowy owl ranging across Canada, Greenland, Europe and Asia. The snowy owl is the official bird of Quebec in the North-east of Canada. The snowy owl is one of the largest species of owl in the world, with the average adult snowy owl growing to about 65cm tall with a wingspan of around 140cm. Snowy owls however can be smaller than this, and can even grow to more than 75cm in height.


Despite the vast range of the snowy owl within the Arctic Circle, it has been reported for snowy owls to travel further south in search of food. Snowy owls have been spotted as far south as Texas in the USA and even in the Caribbean. Snowy owls are also commonly spotted throughout Europe and Asia, from the UK to the southern China. Snowy owls make their nests on the ground but they chose their nesting place very carefully. A nest site for the snowy owl must have good visibility so that the snowy owl is able to keep and eye on it's surroundings, and the nest of the snowy owl must also have a good source of food so that the snowy owl does not have leave the nest for long (if at all) in order to eat.


Snowy owls breed in may and the female snowy owl lays up to 14 eggs although the average clutch size of the snowy owl is about 7. The pure white snowy owls chicks hatch out of the eggs after an incubation period of around 5 weeks. Both the male snowy owl and the female snowy owl parents help to feed and fear their young, and also protect the snowy owl chicks from predators. Although snowy owls are omnivores, they have a primarily carnivorous diet. Lemmings and other small rodents such as mice and voles are the main source of food for the snowy owl. Snowy owls are opportunistic hunters meaning that they will take advantage of an opportunity to hunt larger animals. Snowy owls have been known to hunt fish (when they can find them), squirrels, rabbits, rats, birds and even large mammals such as gophers and foxes.


Like other species of large bird, the snowy owl is known to swallow it's food whole and then regurgitate the bones in the form of a pellet up to 24 hours after feeding. In order to sustain itself, the snowy owl must eat around 5 lemmings or mice every day which is nearly 2,000 in one year. The snowy owl is known to have bright white feathers that are often flecked with black and grey. The snowy owl also has large eyes, a sharp, curved beak and large head, along with feathers on it's feet. All of these features of the snowy owl allow the snowy owl is survive as successfully as possible within the Arctic Circle.


Due to it's large size the snowy owl has few natural predators within it's environment. Humans hunting the snowy owl are the main predators of the snowy owl, along with large foxes, wild dogs and wolves.

Royal Penguin


True Wild Life | Royal Penguin | The royal penguin is a medium to large sized species of penguin that is found inhabiting the freezing waters that surround the Antarctic continent. The royal penguin is best known for the yellow feathers than grow from it's forehead to the back of it's head and are not to be confused with the macaroni penguin which they are closely related to. Like other penguin species, the royal penguin spends the majority of it's life hunting out at sea and are usually found in the nutrient rich waters that surround Antarctica. However, royal penguins are known to only breed on Macquarie Island, a rocky south-western Pacific island that lies roughly half way between New Zealand and Antarctica.


Until recently, the royal penguin and the macaroni penguin where thought to be the same species but there are a number of distinct differences between the two. Royal penguins have white chins and faces, where the face of the macaroni penguin is black. Royal penguins also breed exclusively on Macquarie Island, a place inhabited by no other penguin species. All penguins are fantastic swimmers and the royal penguin is no exception. Royal penguins use their powerful flippers and streamlined bodies, aided by their webbed feet to soar through the water and are able to reach speeds of nearly 20mph. Royal penguins also dive to depths of up to 150m in order to catch food, with dives usually lasting for a few minutes.


The royal penguin is a carnivorous animal, that like all other penguin species, survives on a diet that is only comprised of marine animals. Krill and small crustaceans make up the bulk of the royal penguin's diet along with larger organisms including squid and various species of fish. Royal penguins can be at sea for days at a time whilst hunting. The royal penguin has no natural land-based predators due to the fact that royal penguins inhabit pretty harsh environments. Large leopard seals hunt the royal penguin in the water along with large sharks and killer whales. Royal penguin population have also been seriously affected by human hunting for the oil found in their feathers.


Royal penguins
nest on beaches or on bare areas on slopes covered with vegetation along the island's coast. Royal penguins are colonial birds, nesting in scrapes on the ground up to a mile inland (these sites are known as rookeries). The female royal penguin lays two eggs which are incubated for 35 days. The chicks leave the nest after a couple of months returning when they are 5 to 6 years old to begin breeding themselves. Today, the royal penguin has been listed as a vulnerable species as populations were seriously affected by over hunting at the beginning of the 20th century. This species is now protected so can no longer be poached for it's oil.

Rockhopper Penguin


True Wild Life | Rockhopper Penguin | The rockhopper penguin is a group of penguins that are closely related and share the same love of jumping over rocks to get about, rather sliding around on their bellies in the normal penguin fashion. There are three different species of rockhopper penguin which are the western rockhopper penguin, the eastern rockhopper penguin and the northern rockhopper penguin. Rockhopper penguins are found throughout the sub-Antarctic and in regions of the southern Indian and Pacific Oceans. The regions occupied by the rockhopper penguin depend on the species. The western rockhopper is found around the tip of the South America; the eastern rockhopper breeds on sub-Antarctic islands of the Indian and western Pacific oceans and the northern rockhopper penguin breeds on islands of Tristan da Cunha as well as on Amsterdam and St Paul Islands.


The rockhopper is a small sized species of penguin that is similar in appearance to the slightly larger royal penguin and the macaroni penguin. Rockhopper penguins have black-grey upper parts and a straight, bright yellow eyebrow ending in long yellowish plumes projecting sideways behind a red eye. Their beaks are usually orange/red in colour. All penguins are fantastic swimmers and the rockhopper penguin is no exception. Rockhopper penguins use their powerful flippers and streamlined bodies, aided by their webbed feet to soar through the water. Their unique way of moving about on land also means that the rockhopper penguin is able to inhabit even more extreme environments than other penguin species.


The rockhopper penguin is a carnivorous animal, that like all other penguin species, survives on a diet that is only comprised of marine animals. Krill and small crustaceans make up the bulk of the rockhopper penguin's diet along with larger organisms including squid and various species of fish. Rockhopper penguins can be at sea for days at a time whilst hunting and catch their food by diving deep into the water for minutes at a time. The rockhopper penguin has no natural land-based predators due to the fact that rockhopper penguins inhabit pretty harsh environments, uninhabitable to other animals . Large leopard seals hunt the rockhopper penguin in the water along with large sharks and killer whales. Rockhopper penguin population have also been seriously affected by human hunting, and are easily affected by changes in the water from oil spills and chemical pollutants.


Rockhopper penguins nest on beaches, high up on the cliffs and sometimes inland on islands throughout the sub-Antarctic (these sites are known as rookeries). The female rockhopper penguin lays two eggs which are incubated for just over a month and usually fledge (leave the nest) when they are between 2 and 3 months old. Today, the rockhopper populations throughout the southern hemisphere have been drastically declining and all three species are now at risk. The northern rockhopper penguin is classified as endangered, where the others are not quite in as much danger.

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