why is a bat not classified in the same groups as birds while they have wings and can also fly.?
140787
Because the current classification system is based on homologies, and not analogies. \nHomologous structures have the same origins and are derived from a common structure that existed in an ancestral form. They may have similar functions or not, for instance some of the bones that are found in the mandible of reptiles are transformed into the middle-ear ossicles of mammals: different function, but same origin. Other obvious homologies are the bones in our hand and those in the flipper of a dolphin: same origin, mostly same bones, different function.\nThe similarities between bats and birds are due to adaptations to a flying morphotype, but although the bones forming both bats' and birds' wings are the same (because both have evolved from a tetrapod ancestor with those bones), they don't have a _common ancestor_ that had wings; therefore this trait is not useful for grouping tem.  Their flight was acquired independently.\nThe similarities are convergent, not homologous.
918668
normally bats are nocturnal,,,,normally there most of the activities are in night,,,,,,, but they do fly in day,,,,,,, only for migration becoz they cannot tolerate extreme cold temperature,,,,, they can migrate in day for better habitat
183391
Grasshoppers and all insects have trachea, that is, tubes formed by invagination that extend inside their bodies and carry oxygen directly to the tissues. It's a very efficient system, but doesn't work at large sizes.\n\nBirds have lungs and air sacs. Contrary to the mammalian system, the flow of air in birds lungs is continuous, and the capillaries are arranged at right angles to the airways. It's also very efficient. \nBut other than in their high efficiency, I don't see the similarities.
268841
ok\n Hoatzin chicks have archyopterix-style claws on their wings\n\nPuffin`s beaks are not as colourful out of the breeding season\n\nThe Goatsucker (no, not el Chuppacabra, the bird!) of the USA is called a Nightjar in the UK\n\nAmerican Robins are not related to european Robins, they are in fact a type of thrush\n\ncormorants have to open their wings to "dry" them as they`re not as waterproof as other waterbirds.
170152
Interesting question! As I do not know the answer, I started researching. It appears that other mammals are also collectively known as flock: camels, goats and lions, at least. \nHere's my two cents: \nThe term "flock" derives from an Old English word (flocc) which meant "a group of persons". Later it extended to mean "a number of animals of one kind moving or feeding together" applied to domestic animals. \nSo the question could be "Why are not all groups of domestic animals called flocks?"
477607
Disagree. "Gallop" is a word to describe motion in horses which could be applied to other quadrupeds.\n\nMoths fly... Bumblebees fly, even though their physics and physicality is all wrong.\n\nHumans think, but even mice have been shown to have rudimentary problem-solving abilities which involve thought.\n\nTherefore, I suggest that your proposition is false.
431090
Birds descended from dinosaurs (or at least from thecodont archosaurs closely related to the dinosaurs), not the other way around.\n\nAs far as singing like birds, only one Order of birds, the Passeriformes really sings.  Ostriches, penguins, chickens, hawks, owls, vultures, seagulls, albatross, ducks, boobies, flamingoes, etc. are not really known for their musical ability.\n\nSince the ability to sing is not ancestral to the bird lineage, it is unlikely that it is a trait that came from the dinosaurs.  \n\nThat's not to say that vocalizations didn't evolve separately in one or more dinosaur lineages, but it wouldn't have been homologous to the Passerine vocal ability.
656671
I used to own chickens and roosters. Neither can fly not even a few meters. They are able to jump/flight to there perch and thats about it.\n\nWing to body size ratio prevents their flight.
1095883
many have different types of wings and flying habits depending on how they gather food, eg humming birds are the only birds that can fly backwards to get out of flowers, some have eyes on either side of their heads to see virtually 360 degrees, other hunting birds - owl, hawk etc have eyes in the front to give them depth perception, others like the penguin have special feathers to prevent them from freezing and their wings are more like flippers to help them move through the water
932935
a flying horse is not called a pegasus.\n\npegasus was just the name of the winged horse bellerophron rode\n\nthey are called winged horses, or winged steeds.\n\ni have never heard of this footage you speak of, but robot chicken had a short skit with a winged horse
822408
insects have an ectoskeleton, it's on the outside.  It's like armour.  Now imagine if they were the size of humans, it would be very easy for them to take over the world.  They'd be unstoppable!
321389
flies are more maleable - impact resisitant\nbuilt better I guess\nthe mass and speed of the fly are a lot less\n\nbirds have necks with thin hollow breakable bones\nflies have a head and an abdomen and thorax but they have exo-skeletons
1172940
A normal bat will usually have nothing to do with people.  They have the potential to have rabies and a rabid bat will go after anything.  This is rare, however, and they do a world of good at getting rid of bugs.
47737
Not just storks ... but migrating birds in general  usually fly in the "V" formation.  This has been studied by a lot of very educated people in many colleges and universities.  Aerodynamics is the best guess answer. Each bird taking advantage of the wing tip vortices of the uplifting air of the bird in front of it.  This updraft actually lifts the bird making it's flight a little easier.
173408
Yes, or at least from some predatory archosaurs. There are currently two strong theories, each with their supporters: birds are dinosaurs (Padian, Chiappe, etc.), or birds are non-dinosaur archosaurs (Feduccia).\n\nIf they evolved within the Dinosauria, as much evidence seems to show (see link), then according to a cladistic classification they ARE dinosaurs (the same way that we are Sarcopterygians, even if we're not fish-like anymore).
1124260
Could they of been buzards? I am not familar with your area, here in the South (GA) we have black vultures and they are completely black (brown), we also have turkey vultures but they have white on them. Buzzards fly by their self and in large groups.
106770
Even though they can't distinguish images the eyes of a bat are used to determine relative lighting conditions such as day or night and all hues in between.  This is how they determine if it is night and thus time to feed.