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Archive for the ‘Nocturnal Animals | Night Animals’ Category

Conger eel

20 Jun

The monstrous migrating eel can be found off our coasts. Simon King, the brave man, dived to try to meet one of these top predators face-to-face in Autumnwatch 2008.

Conger Eel

Conger Eel

Species information

In and around the rocky places and shipwrecks of our seas lurks one top predator that every creature on the seabed should be be wary of – the conger eel. This muscular and snake-like monster can reach three metres long and weigh over 50kg. The long and powerful conger with its strong jaw and sharp teeth, will eat almost any seafood it finds, from octopus to crabs to fish. It is most active at night as it leaves its resting place to hunt.

Its smooth, scaleless skin makes it the proverbial slippery customer. The dorsal fin runs the length of its body and the upper jaw extends beyond the lower one. After an amazing migration to the centre of the Atlantic the mature conger eel spawns only once and then dies soon afterwards. The young of the conger eel are called ‘straps’.

The conger is most common and widespread in the waters of south and west Britain and the whole of Ireland. It can occasionally be found around any of our coastlines, usually at depths down to 500m or even as low as 4,000m when spawning.

 

Skunk

18 Jun
Skunk

Skunk

Skunks are the smelliest mammals. These small, nocturnal animals are found in South and Central America and much of North America.

The Spray: Skunks produce a very smelly spray that repels most predators. This oily, yellow liquid is produced in two glands located under the tail. They can spray up to 10 feet away. The smell is long-lasting and very hard to get rid of.

Anatomy: Wild skunks are black and white, but the patterns vary. They all have a bushy tail, short legs, clawed feet, and a long snout. Domesticated skunks have a variety of coat colors and patterns.

Diet: Skunks are omnivores; they eat insects, rodents, reptiles, small mammals, worms, eggs, fish, fruit, and plants.

Tracks – The skunk leaves a distinct pattern which is easily identified. The smaller front feet are pigeon-toed and placed just ahead of the larger rear feet while in motion. This five-toed creature has long claws which are usually evident in the print.

 

Bats

22 Apr

Bats are flying mammals in the order Chiroptera (pronounced /kaɪˈrɒptərə/). The forelimbs of bats are webbed and developed as wings, making them the only mammals naturally capable of true and sustained flight. By contrast, other mammals said to fly, such as flying squirrels, gliding possums and colugos, glide rather than fly, and only for short distances. Bats do not flap their entire forelimbs, as birds do, but instead flap their spread out digits, which are very long and covered with a thin membrane or patagium. Chiroptera comes from two Greek words, cheir (χείρ) “hand” and pteron (πτερόν) “wing.”

There are about 1,100 bat species worldwide, which represent about twenty percent of all classified mammal species. About seventy percent of bats are insectivores. Most of the rest are frugivores, or fruit eaters. A few species feed from animals other than insects. Bats are present throughout most of the world and perform vital ecological roles such as pollinating flowers and dispersing fruit seeds. Many tropical plants depend entirely on bats for the distribution of their seeds.

Bats range in size from Kitti’s Hog-nosed Bat measuring 29–33 mm (1.14–1.30 in) in length and 2 g (0.07 oz) in mass, to the Giant Golden-crowned Flying-fox, which has a wing span of 1.5 m (4 ft 11 in) and weighs approximately 1.2 kg (3 lb).

Sleeping Bats

Sleeping Bats

 

Badger

22 Apr

Badgers, occasionally referred to as brocks, are short-legged, heavy-set omnivores in the weasel family, Mustelidae. There are eight species of badger, in three subfamilies (see links in species list below): Melinae (badgers of Europe and Asia), Mellivorinae (the Ratel or honey badger), and Taxideinae (the American badger). The Asiatic stink badgers of the genus Mydaus were formerly included in the Melinae and Mustelidae, but recent genetic evidence indicates that these are actually closer relatives of the skunks, now often put with them in the separate family Mephitidae.

Badgers include the species in the genera Meles, Arctonyx, Taxidea and Mellivora species. Their lower jaw is articulated to the upper by means of a transverse condyle firmly locked into a long cavity of the cranium, so that dislocation of the jaw is all but impossible. This enables the badger to maintain its hold with the utmost tenacity, but limits its jaw movement to hingeing open and shut, or sliding from side to side without the twisting movement possible for the jaws of most mammals.

Badger

Badger

Behavior

The behavior of badgers differs by family, but all shelter underground, living in burrows called setts which may be very extensive. Some are solitary, moving from home to home, while others are known to form clans. Clan size is variable from 2 to 15. Badgers can be fierce animals and will protect themselves and their young at all costs. Badgers are capable of fighting off much larger animals such as wolves, coyotes and bears. Badgers can run or gallop at up to 25–30 kilometres per hour (16–19 mph) for short periods of time.

North American Badgers (Taxidea taxus) and Coyotes (Canis latrans) have been seen hunting together, in a cooperative fashion.

Diet

The diet of the Eurasian badger consists largely of earthworms, insects, and grubs. They also eat small mammals, amphibians, reptiles and birds as well as roots and fruit.

The honey badger of Africa consumes honey, porcupines and even venomous snakes (such as the puff adder). They will climb trees to gain access to honey from bees’ nests.

American Badgers are fossorial carnivores. Unlike many carnivores that stalk their prey in open country, badgers catch most of their food by digging. They can tunnel after ground-dwelling rodents with amazing speed. They have been known to cache food.

In North America, coyotes sometimes eat badgers and vice versa, but the majority of their interactions seem to be mutual or neutral.

Badgers have been known to become intoxicated with alcohol after eating rotting fruit.[13]

Badgers and humans

Hunting badgers is common in many countries. Manipulating the badger population is prohibited in many European countries as badgers are listed in the Berne Convention, but they are not otherwise the subject of any international treaty or legislation.

The blood sport of badger-baiting was outlawed in the United Kingdom by the Cruelty to Animals Act 1835 as well as the Protection of Badgers Act 1992 which makes it a serious offence to kill, injure or take a badger, or to damage or interfere with a sett unless a licence is obtained from a statutory authority. An exemption that allowed fox hunters to loosely block setts to prevent chased foxes escaping into them was brought to an end with the passage of the Hunting Act 2004.

Many badgers in Europe were gassed during the 1960s and 1970s to control rabies. Until the 1980s, gassing was also practised in the UK to control the spread of bovine TB.

A Scandinavian custom is to put eggshells or styrofoam in one’s boots when walking through badger territory, as badgers are believed to bite down until they can hear a crunch. The dachshund dog breed has a history with badgers; “dachs” is the German word for badger, and dachshunds were originally bred to be badger hounds.

As food

Although rarely eaten today in the United States or the United Kingdom,[15] badger was once one of the main meat sources in the diets of Native Americans and white colonists. Badgers were also eaten in Britain during World War II and the 1950s.

In Russia, the consumption of badger meat is still widespread. Badger, along with dog and pork, shish kebabs are cited as a major source of trichinellosis outbreaks in the Altai region of Russia. Consumption of badger meat also occurs in other European countries such as Croatia, where it is used in a variation of the traditional dish of goulash.[22] In contrast to Russia, there are no reports of trichinellosis related to the consumption of badger meat. This is credited to adequate preparation of the meat and good thermal processing of it.

In France, badger meat was used in the preparation of several dishes, such as Blarieur au sang and it was a relatively common ingredient in countryside cuisine.[23] Badger meat was eaten in some parts of Spain until recently as well.[24]

Badger remains a source of food in China, and the meat is freely available in market places. Other Asian countries also have traditions of consuming badger meat. In Japan, it is mentioned in folktales where it is regarded as a food for the humble.[27]

 
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Aye-aye

22 Apr

The Aye-aye (Daubentonia madagascariensis) is a lemur, a strepsirrhine primate native to Madagascar that combines rodent-like teeth with a long, thin middle finger to fill the same ecological niche as a woodpecker. It is the world’s largest nocturnal primate, and is characterized by its unusual method of finding food; it taps on trees to find grubs, then gnaws holes in the wood and inserts its elongated middle finger to pull the grubs out. The only other animal species known to find food in this way is the Striped Possum. From an ecological point of view the Aye-aye fills the niche of a woodpecker as it is capable of penetrating wood to extract the invertebrates within.

The Aye-aye is the only extant member of the genus Daubentonia and family Daubentoniidae (although it is currently classified as Near Threatened by the IUCN); a second species, Daubentonia robusta, appears to have become extinct at some point within the last 1000 years.

Aye-aye

Aye-aye

Habitat

The Aye-aye lives primarily on the east coast of Madagascar. Its natural habitat is rainforest or deciduous forest, but many live in cultivated areas due to deforesting. Rainforest Aye-ayes, the most common, dwell in canopy areas, and are usually sighted upwards of 700 meters altitude. The Aye-aye sleeps during the day in nests built in the forks of trees.

Behavior

Social interaction

The Aye-aye is classically considered ‘solitary’, but recent research suggests that they are more social than once thought. It usually sticks to foraging in its own personal home range, or territory. The home ranges of males often overlap and the males can be very social with each other. Female home ranges never overlap, though a male’s home range often overlaps that of several females. The male Aye-Aye live in large areas that are up to 80 acres (320,000 m2) while female have smaller living space that goes up to 20 acres (81,000 m2). Regular scent marking with their cheeks, neck and genitals is a way that aye-ayes let others know of their presence and repel intruders from their territory.[13] Like many other prosimians, the female Aye-aye is dominant to the male. The Aye-aye is not monogamous by any means, and often competes with each other for mates. Males are very aggressive in this regard, and sometimes even pull other males off a female during mating. Outside of mating, males and females interact only occasionally, usually while foraging.

After impregnating a female, the male usually stays in close proximity until the infant is born and has matured a bit. The father will sometimes share food with the infant, but otherwise infants’ primary source of social interaction is with their mothers. Mothers and infants often wrestle, chase, and play “peek-a-boo” for entertainment. After 13 weeks, infants are usually ready to interact with other young Aye-ayes, usually by play-fighting.

Foraging

The Aye-aye begins foraging anywhere between 30 minutes before or 3 hours after sunset. Up to 80% of the night is spent foraging in the canopy, separated by occasional rest periods. The monkey-like body of the Aye-aye enables it to move vertically with ease. It climbs trees by making successive vertical leaps, much like a squirrel. Horizontal movement is more difficult, but the Aye-aye rarely descends to jump to another tree, and can often cross up to 4 km (2.5 mi) a night.

Infants are fully dextrous within a month of birth. At first they can only climb on a branch hanging upside down, but they gradually work their way up to the various acrobatic feats that adults can perform. Curiously, walking and running on the ground is often hardest for an Aye-aye to master.

Diet

The Aye-aye commonly eats nuts, and also grubs, fruits, nectar, seeds, and fungi, classifying it as an omnivore. It often picks fruit off trees as it moves through the canopy, often barely stopping to do so. An Aye-aye not lucky enough to live in its natural habitat will often steal coconuts, mangoes, sugar cane, lychees and eggs from villages and plantations. Aye-ayes tap on the trunks and branches of the trees they visit up to 8 times per second and listen to the echo produced to find hollow chambers inside. Once a chamber is found they chew a hole into the wood and get grubs out of that hole with their elongated and bony middle fingers.

Social foraging

Though foraging is mostly solitary, it will occasionally forage in groups. Individual movements within the group are coordinated using both sound (vocalisations) and scent signals.

History

The original meaning of the name Aye-aye has been lost, as the originating language is extinct. There is a hypothesis that the word “aye aye” signifies simply a cry of alarm to alert others to the presence of this animal, which many Malagasy consider an ill omen.

With D. robusta’s extermination, the D. madagascariensis Aye-aye was thought to be extinct. However, it was later rediscovered in 1961. Six individuals were transported to Nosy Mangabe, an island near Maroantsetra in eastern Madagascar. Recent research shows that the Aye-aye is more widespread than was previously thought, but is still near threatened.

There are several Aye-ayes kept in zoos. The largest collection of Aye-ayes and the most successful breeding program with a current population of 22 individuals is at the Duke Lemur Center at Duke University, Durham, North Carolina, US. Several also reside outside of the US at various locations.