Birds can fly except ostrich, kiwi and penguin. why?
Answers
Answer:Ostriches, emus, cassowaries, rheas, and kiwis can't fly. Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. ... Tinamous fly, albeit reluctantly. And they possess keeled sternums, suggesting that they evolved with flying birds.Penguins can't fly through the air, but they can fly through the water. ... But water is much thicker than air, so their wings are shorter and stiffer than a normal bird's wings. In fact, penguins are the only birds that are unable to fold their wings.
Answer: Hey pal!
Ostriches, emus, cassowaries, rheas, and kiwis can't fly. Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. Their puny wings can't possibly lift their heavy bodies off the ground.
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