It's possible that it's driveshaft u-joints. Same thing happened to me very recently, and was very similar to what you posted.
Jack the rear end up and try spinning the wheels to see if you hear the noise coming from the driveshaft.
If not, try it with the front end.
It's a good place to start
Also, if you search the forum for "Angry sparrows" you will see a few threads on this topic that will have a good bit of info.