Hollow bones, modification of the forelimbs, high temperature, presence of air sacs, presence of enormously powerful muscles, transformation of the jaws into beaks, modification of the digestive system, aerodynamic body, absence of urinary bladder and the absence of the right ovary makes the body light and suitable for aerial life. There are approximately 1100 species of bats present in the world. And there are around 110 species of bats in India. They are the only mammals with true flight, and this is mainly responsible for their worldwide distribution. Their flight organs are the lateral extensions of the skin, the patagium supported by the forelimbs and the very elongated fingers, except the first. The patagia can also include the hind limbs and tail. The hind limbs are relatively short and weak with the knees pointing backwards as do the elbows. This makes the bats helpless on the ground. All five toes of the hindlimbs and the first two toes of the forelimbs bear claws. All bones are thin to reduce body weight. The senses of touch and hearing are greatly developed. Although bats have eyes and see well, they guide themselves during flight according to the radar principle. They produce supersonic sounds that are repelled by objects they encounter and are perceived by the ears. The penis contains a bone inside it. Usually there are only two mums, who lie on the chest. At birth they produce only one or sometimes two young. They are nocturnal animals, and spend the day hanging upside down from various objects by the claws of one or both feet. The order Chiroptera is divided into 2 suborders: Microchiroptera which includes small bats and Megachiroptera which includes large bats or flying foxes. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Description: The adult bird is 55–65 cm long with a wingspan of 88–106 cm and weighs 350–550 g. Its plumage is normally white, although there are dark forms with largely bluish-grey plumage. During the reproductive period the adult has two long plumes on the back of the neck that form a crest. These plumes measure approximately 15 cm and are pointed and very narrow. There are similar feathers on the chest, but the tips are more widespread. It has several elongated shoulder feathers that have long loose tips 20 cm long. In winter the plumage remains unchanged but the scapulars are shorter and more normal in appearance. The beak is long and slender and the coat is black. There is an area of ​​greenish-gray bare skin at the base of the lower jaw and around the eye which has a yellow iris. The legs are black and the feet yellow. Juveniles are similar to non-breeding adults but have greenish-black legs and duller yellow feet and may have some proportion of greyish or brownish feathers. Distribution and habitat: They are found in southern Europe, the Middle East, much of Africa and southern Asia. Northern European populations are migratory, mostly traveling to Africa although some remain in Southern Europe, while some Asian populations migrate to the Philippines. The egret's habitat varies widely and includes the shores of lakes, rivers, canals, ponds, lagoons, swamps, and flooded land, as the bird prefers open locations to dense cover. On the coast it inhabits areas of mangroves, swamps, mudflats, sandy beaches and cliffs. Behavior: Egrets are social birds and are often spotted in small groups. However, individual birds do not tolerate other birds coming too close to their chosen feeding site, although this depends on the abundance of prey. They use different methods to obtain food. They chase prey in shallow water, often running with.