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Dinosaurs are a diverse group of reptiles. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous period (about 65 million years ago), when the Cretaceous–Tertiary extinction event caused the extinction of most dinosaur species, except for some birds. The fossil record indicates that birds evolved from theropod dinosaurs during the Jurassic period, and most paleontologists regard them as the only group of dinosaurs to have survived until the present day.
Dinosaurs are a diverse and varied group of animals; birds, at over 9,000 species, are the most diverse group of vertebrate besides perciform fish.Paleontologists have identified over 500 distinct genera and more than 1,000 different species of non-avian dinosaurs.Dinosaurs are represented on every continent by both extant species and fossil remains.Some dinosaurs are or were herbivorous, others carnivorous. Some have been bipedal, others quadrupedal, and others have been able to shift between these body postures. Many non-avian species developed elaborate skeletal modifications such as bony armor, horns or crests. Avian dinosaurs have been the planet's dominant flying vertebrate since the extinction of the pterosaurs. Although generally known for the large size of some species, most dinosaurs were human-sized or even smaller. Most groups of dinosaurs are known to have built nests and laid eggs.One notable exception is Repenomamus giganticus, a triconodont weighing between 12 kilograms (26 lb) and 14 kilograms (31 lb) that is known to have eaten small dinosaurs like young Psittacosaurus.
Since the first dinosaur fossils were recognized in the early nineteenth century, mounted dinosaur skeletons have been major attractions at museums around the world, and dinosaurs have become a part of world culture.for more animals...

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The central american squirrel monkey is a small monkey with an orange back and a distinctive white and black facial mask. It has an omnivorous diet, eating fruits, other plant materials, invertebrates and some small vertebrates. In turn, it has a number of predators, including raptors, cats and snakes. It lives in large groups that typically contain between 20 and 75 monkeys. It has one of the most egalitarian social structures of all monkeys. Females do not form dominance hierarchies, and males only do so at breeding season. Females become sexually mature at 2½ years, and males at 4 to 5 years. Sexually mature females leave the natal group, but males can remain with their natal group their entire life. The Central American Squirrel Monkey can live for more than 15 years.
Adults reach a length of between 266 and 291 millimetres (10.5 and 11.5 in), excluding tail, and a weight between 600 and 950 grams (21 and 34 oz).The tail is longer than the body, and between 362 and 389 mm (14.3 and 15.3 in) in length.As with other squirrel monkeys, there is considerable sexual dimorphism. On average, males weigh 16% more than females.Males have an average body weight of 829 g (29.2 oz) and females average 695 g (24.5 oz).Squirrel monkeys have the largest brains of all primates relative to their body size; the Central American Squirrel Monkey's brain weighs about 25.7 g (0.91 oz), or about 4% of its body weight.for more pics...

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The Red-handed Tamarin (Saguinus midas), also known as the Golden-handed Tamarin or Midas Tamarin.The Red-handed Tamarin is an exceptional climber and spends most of its time among the vines and branches of the trees. They are quick and agile and are superb jumpers known to jump distances of over 60 feet (18 m) from a tree to the ground with no sign of injury.The tamarin's diet consists of fruit, flowers, insects, frogs, spiders, lizards, and nectar.The Red-handed Tamarin's body measures 20.5–28 centimetres (8.1–11 in); including the tail they measure 31–44 centimetres (12–17 in). They weigh 400–550 grams (0.88–1.2 lb). Their life expectancy is approximately 10 years in the wild and 16 years in captivity.Their natural predators are small cats, birds of prey, and snakes. Due to the destruction of their natural habitat the livelihood of the species is at risk.The Red-handed Tamarin is territorial and can be aggressive, with sharp canines and claws instead of fingernails on all fingers and all but the large toe.
They live in cooperative groups of 4 to 15 members with little competition among a group even between breeding males. Only one female among a group will breed during breeding season with the other females suppressing the instinct. The gestation period is 140–170 days and mothers typically give birth to two offspring.for cute birds...

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The Black-rumped Flameback is a large species at 26-29 cm in length. It has a typical woodpecker shape, and the golden yellow wing coverts are distinctive. The rump is black and not red as in the Greater Flameback. The underparts are white with dark chevron markings. The black throat finely marked with white immediately separates it from other golden backed woodpeckers in the Indian region. The head is whitish with a black nape and throat, and there is a greyish eye patch. Unlike Greater Flameback it has no dark moustachial stripes.
The adult male Black-rumped Flameback has a red crown and crest. Females have a black forecrown spotted with white, with red only on the rear crest. Young birds are like the female, but duller.Like other woodpeckers, this species has a straight pointed bill, a stiff tail to provide support against tree trunks, and zygodactyl feet, with two toes pointing forward, and two backward. The long tongue can be darted forward to capture insects.for more images..

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The monk parakeet is 29 cm long on average, with a 48 cm wingspan, and weighs 100 g. Females tend to be 10-20% smaller but can only be reliably sexed by DNA blood or feather testing. It has bright green upperparts. The forehead and breast are pale grey with darker scalloping and the rest of the underparts are very-light green to yellow. The remiges are dark blue, and the tail is long and tapering. The bill is orange. The call is a loud and throaty chape(-yee) or quak quaki quak-wi quarr, and screeches skveet.The lifespan of Monk Parakeets has been given as 15–20 years or as much as 25–30 years the former might refer to average lifespans in captivity and/or in the wild, while the latter is in the range of maximum lifespans recorded for parakeets.
Monk Parakeets are highly intelligent,these Parakeet is the only parrot that builds a stick nest, in a tree or on a man-made structure, rather than using a hole in a tree. This gregarious species often breeds colonially, building a single large nest with separate entrances for each pair. In the wild, the colonies can become quite large, with pairs occupying separate "apartments" in nests that can reach the size of a small automobile. These nests can attract many other tenants including birds of prey such as the Spot-winged Falconet ducks such as the Speckled Teal and even mammals. Their 5-12 white eggs hatch in about 24 days.for more pics...

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The African grey parrots are smaller in size, have a darker charcoal grey colouring, a darker maroon tail, and a light, horn-coloured area to part of the upper mandible.
They feed primarily on palm nuts, seeds, fruits, leafy matter, but have been observed eating snails. Their overall gentle nature and their inclination and ability to mimic speech have made them popular pets. This has led many to be captured from the wild and sold into the pet trade. These parrots are endemic to the western parts of the moist Upper Guinea forests and bordering savannas of West Africa from Guinea-Bissau, Sierra Leone and Southern Mali east to at least 70 km (43 mi) east of the Bandama River in Ivory Coast.for different pics..

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The Griffin Vulture (Gyps fulvus) is a large Old World vulture in the bird of prey family Accipitridae.The Griffin Vulture is 93–110 cm (37–43 in) long with a 230–269 cm (91–106 in) wingspan, and it weighs between 6 and 13 kg (13.2 and 29 lb). Hatched naked, it is a typical Old World vulture in appearance, with a very white bald head, very broad wings and short tail feathers. It has a white neck ruff and yellow bill. The buff body and wing coverts contrast with the dark flight feathers.
Like other vultures it is a scavenger, feeding mostly from carcasses of dead animals which it finds by soaring over open areas, often moving in flocks. It grunts and hisses at roosts or when feeding on carrion.It breeds on crags in mountains in southern Europe, north Africa, and Asia, laying one egg. Griffon Vultures may form loose colonies. The population is mostly resident.
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Rüppell's Vultures are highly social, roosting, nesting, and gathering to feed in large flocks. They can travel fast at need, cruising at up to 35 kilometres per hour (22 mph), and will fly as far as 150 kilometres (93 mi) from a nest site to find food. Rüppell's Vultures commonly fly at altitudes ranging up to 6,000 metres (19,700 ft) and have been considered to be the world's highest flying bird after a Rüppell's Vulture was confirmed to have been ingested by a jet engine of an airplane flying over Abidjan, Côte d'Ivoire on November 29, 1973 at an altitude of 11,000 metres (36,100 ft). Rüppell's Vultures have a specialized variant of the hemoglobin alphaD subunit; this protein has a high affinity for oxygen, which allows the species to take up oxygen efficiently despite the low partial pressure in the upper troposphere.Rüppell's Vultures are creatures of the more arid and mountainous areas of Africa: particularly semi-desert and the fringes of deserts.
Adults are close to 1 metre (3.3 ft) in length, with a wingspan of around 2.6 metres (8.5 ft), and a weight that usually ranges from 7 to 9 kg (15 to 20 lb). Both sexes are alike: mottled brown or black overall with a whitish-brown underbelly and thin, dirty-white fluff covering the head and neck. The base of the neck has a white collar, the eye is yellow or amber, the crop patch deep chocolate-brown. Silent as a rule, they become vocal at the nest and when at a carcass, squealing a great deal.for more animals..

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The Australian White Ibis is around 65–75 cm (25–30 in) long and has a bald black head and neck and a long black downcurved beak, measuring over 16.7 cm (6.6 in) in the male, and under in the female. There is some sexual dimorphism in size, as the slightly heavier male weighs 1.7–2.5 kg (3.7-5.5 lb) compared to the 1.4–1.9 kg (3.1–4.2 lb) female. The body plumage is white although it may become brown-stained. Inner secondary plumes are displayed as lacy black 'tail' feathers. The upper tail becomes yellow when the bird is breeding. The legs and feet are dark and red skin is visible on the underside of the wing. Immature birds have shorter bills.The head and neck are feathered in juveniles.This ibis feeds on various fish, frogs and other water creatures, and also insects and garbage.Breeding season varies with the location within Australia, generally August to November in the south, and February to May, after the Wet Season, in the north. The nest is a shallow dish-shaped platform of sticks, grasses or reeds, located in trees and generally near a body of water such as river, swamp or lake. Ibis commonly nest near other waterbirds such as egrets, herons, spoonbills or cormorants. Two to three dull white eggs are laid measuring 65 mm × 44 mm. The clutch is then incubated for 21–23 days. Hatchlings are altricial, that is, they are naked and helpless at birth, and take 48 days to fledge.for more pics...