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Summarizing an Article

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I need help summarizing this biology article discussing the evolution of how bird song affects signal efficiency using the following sections:

Background information & importance to biology
Question researched
Hypothesis/Predictions made
Material and Methods (Details not required)

Article: http://www.museum.lsu.edu/elizabethderryberry/Publications_files/Derryberry%202007.pdf

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Question researched - This is basically asking you what they're trying to investigate. What question do they want to answer?

A good place to start is to read the abstract at the very top of the paper. Perhaps the most pertinent information in there, for this question, is:

"Although variation in mating signals among populations is known to affect mating behavior, there is no direct evidence that the evolution of mating signals changes signal effectiveness within a natural population."

We can basically rewrite that into a research question:

Since there is no direct evidence that evolution of mating signals change signal effectiveness, does variation in mating signals among populations (presumably of the same species) affect mating behavior?

Hypothesis/predictions - Most research studies will make a prediction, a hypothesis, about how their experiments will turn out. Or what their observations are like.

The most useful information comes from the introduction, second paragraph:

"The prediction that signal evolution may contribute directly to the formation of reproductive barriers is not well ...

Solution Summary

The expert summarizes an article evolution. The material and methods are provided.