Bats:
Bats are mammals of the order Chiropetra whose forelimbs form webbed wings, making them the only mammals naturally capable of true and sustained flight. Unlike birds, bats do not flap their entire forelimbs, instead of flap they spread out digits, which are very long and covered with a thin membrane or patagium.
Birds:
Birds are feathered, winged, two –legged, warm legged, warm-blooded, and egg laying vertebrates. Birds are characterized by feathers, a beak with no teeth, the hard laying of hard-shelled eggs, a high metabolic rate, a four chambered heart and a light weight but strong skeleton. Extant birds have more or less developed wings. Wings are evolved forelimbs, and the most bird species can fly.
Differences:
| Basis | Bats | Birds |
|---|---|---|
| Definition | Any of various nocturnal flying mammals of the order Chiroptera, having membranous wings that extend from the forelimbs to the hind limbs or tail and anatomical adaptations for echolocation, by which they navigate and hunt prey. (www.thefreedictionary.com) |
A warm-blooded egg-laying vertebrate animal distinguished by the possession of feathers, wings, a beak, and typically by being able to fly (www.oxforddictionaries.com) |
| Synonyms | Sock, bop, blow, slam and smack | Game, fowl and feathered creature |
| Antonyms | Flattery, praise and compliment | Clap, guy, nobleman, lord and applaud |
| Types | Its types are:
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Its types are:
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| History | Bats arose about 50 million years ago. Bats may roost in trees or may inhabit caves, buildings, or any structure that provides an overhang. They are social animals, often roosting together in large swarms. | There is significant evidence that birds emerged within theropod dinosaurus, specifically that birds are members of Maniraptora, a group of theropods which includes deomaeosaurs and oviraptorids, among others. As more non-avian theropods that are closely related to birds are discovered, the formerly clear distinction between non-birds and birds becomes less so. |
| Word origin | It was originated from Late Old English batt ‘club, stick, staff’, perhaps partly from Old French batte, from battre ‘to strike’. | It was originated in Old English brid ‘chick, fledgling’, of unknown origin. |
| Covers | Bats have fur on their bodies. | Birds have feathers covering their bodies. |
| Birth | Bats give birth. | Birds lay eggs. |
| Body | Bats have arms, hands and feet. | Birds only have talons. |
| Eats | Baby bats drink milk from their mothers. | A baby bird eats worms and bugs that the mother brings. |
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| Lower classifications |
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| Higher classification | Laurasiatheria | Ornithurae |
| Scientific name | Chiroptera | Aves |
| Rank | Order | Class |
| Mouth structure | Bats have teeth. | Birds have beaks. |
| Wing structure | Birds have feathers projecting back from lightweight, fused arm and hand bones. | Bats have flexible, relatively short wings with membranes stretched between elongated fingers. |
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