Bats in Question: The Smithsonian Answer Book by Don E. Wilson

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By Don E. Wilson

Do bats particularly drink blood? how briskly can bats fly? Are they on the topic of birds? What are the most important and smallest bats? Why do they reside in colonies?Long the themes of delusion and superstition, bats were one of the such a lot misunderstood of mammals because of their nocturnal conduct, potential for flight, and weird visual appeal. Bats account for almost 1 / 4 of the world's mammal species, but at any time when they're visible they bring up questions.Seeking to dispel the myths linked to those amazing creatures and arguing for his or her key function in a balanced surroundings, Bats in query covers all elements of bat biology in a realistic question-and-answer structure. Describing the place bats dwell, how they use echolocation to navigate, or even why they hold the other way up, the publication additionally provides the conservation prestige of all 925 bat species. the writer strains the evolution of bats and indicates their amazing variety by way of describing all of the significant teams by way of their diverse physique buildings and habitats. He additionally sheds mild on bats' complicated social structures, striking edition in measurement, and foodstuff personal tastes that surround vegetation, bugs and mammals.The ebook additionally explores cultural attitudes approximately bats - telling how, till lately, bats have been relegated to the area of vampires and the way they've got emerged to take their position in public wisdom as vital and interesting individuals of our ecosystems.

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29). As noted, the high-frequency sounds bats produce are absolutely essential to their ability to navigate at night. Echolocation calls vary considerably in frequency and intensity, depending on the species and the function of the calls. Echolocating bats use differences in time and frequency between the pulse emitted and the echo received to discriminate targets such as prey items. They can not only assess the distance to a target but judge details of the target as well. ). 29. A Jamaican fruit bat, Artibeus jamaicensis.

The back part of the skull, or braincase, houses and protects the brain and provides attachments for muscles, including some of those used in biting and chewing. Muscle attachment is facilitated by bony structures called crests. A sagittal crest, running along the top of the braincase, and a lambdoidal crest along the back are exceptionally well developed in species with large, strong jaws. Similarly, the zygomatic arches, or cheekbones, range from tiny, fragile bones that may even be absent in some species to enlarged bony plates providing surface areas for muscle attachments.

14). The inside surface is frequently decorated with folds or ridges and may be more or less covered with bands of hair. In addition to the pinna, many species have a small flap at the base of the ear, known as the tragus. It is quite variable in shape and size and forms another useful characteristic for classification and identification of some species. In some species there is also an antitragus, or broad flap continuous with the outer edge of the pinna. Although the exact function of these structures is not well known, it seems likely that the tragus is involved in receiving echoes returning from echolocation pulses.

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