If you ever have the chance to visit the Bill Williams River National Wildlife Refuge near Lake Havasu Arizona I highly recommend it as it is a birders paradise. Because of its location between the Mojave and Sonoran Deserts and proximity to the Colorado River the bird life, both resident and migratory is outstanding.
While not the best audio (May need to turn it up), you can hear a diversity of avi-fauna that I recorded separately, but simultaneous to the aerial flight:
Bonus points for anyone who can ID all the birds by call in the audio!
I recorded the aerial scenes keeping other field biologists in mind who have worked the area and can identify survey plot locations by the unique aerial perspective. There are a series of trail systems in the dense vegetation that are difficult to navigate to and through in order to get to a survey plot:
