Provide arguments for the ground up and the tree down theories for the evolution of flight

You must use at least two journal article sources in each answer other than ones we used in class. Of course you can use any material from class but your answer must go beyond what we discussed in class. Your answers must be typed and double-spaced. Obviously you must include full citations for the sources you use. This should go without saying but do not collaborate on your answers and do not plagiarize.
1.Feather color is often referred to as an honest indicator of male quality. Find evidence for this statement. In your answer be sure to indicate how the color is produced.
2. Provide arguments for the ground up and the tree down theories for the evolution of flight. Where do you think Archaeopteryx fits into this scenario? Provide support for your answer.
3.What is insight learning? What evidence exists that birds are capable of insight learning.
4.Provide arguments for the ground up and the tree down theories for the evolution of flight. Where do you think Archaeopteryx fits into this scenario? Provide support for your answer.


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