Where is my axle noise from?

Bearings can be such a pain to diagnose, the weight of the vehicle makes bearing noises show up that can't be reproduced on jack stands.
I have the Chassis ears for bearing noises , they can be clipped on whatever area you want to check for a noise with the car on a test drive.
Best tool I have ever found for pin pointing bearing noises.

http://www.amazon.com/dp/B000IHIAES/?tag=fabo03-20