Photos To Have Faith Is Wings Amazing Flying Birds

Photos To Have Faith Is Wings Amazing Flying Birds. The most obvious adaptation to flight is the wing but because flight is so energetically demanding birds have evolved several other adaptations to improve efficiency when flying Birds bodies are streamlined to help overcome air resistance Also the bird skeleton is hollow to reduce weight and many unnecessary bones have been lost such as the bony tail of the early bird Archaeopteryx along with the toothed jaw of early birds which has been replaced with a lightweight beak The skeleton s breastbone has also adapted into a large keel suitable for the attachment of large powerful flight muscles The vanes of each feather have hooklets called barbules that zip the vanes of individual feathers together giving the feathers the strength needed to hold the airfoil these are often lost in flightless birds The barbules maintain the shape and function of the feather.

Most of the flight power comes from the downstroke as the wing moves down and forward The pectoralis major think outer breast meat a bird s largest muscle provides power for the downstroke which in most birds is the engine of forward movement During the upstroke wings are partially folded to reduce drag Some birds gain power on the upstroke but mostly it is a recovery stroke to return wings for the next downstroke

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Posted in Bird by andolsimon at September 16, 2018. Gallery of Photos To Have Faith Is Wings Amazing Flying Birds :
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