Complex sentence: The choruses last on average about 10 minutes and interestingly enough respond to both the chorus of both genders equally, because the chorus is not thought to be a mating competition, but simply a way for mating groups to gather together.
Split into simpler sentences: The choruses last on average about 10 minutes and interestingly enough respond to both the chorus of both genders equally. It has been theorized that this is because the chorus is not a mating competition, simply a way for mating groups to gather together.