http://yro.slashdot.org/story/12/02/26/2141246/youtube-identifies-birdsong-as-copyrighted-music?sdsrc=popbyskid

I haven't had time to dig in, but from the Slashdot article, Rumblefish are identifying birdsong from the video as their content.

It might be a good idea with a heads up that some people are not playing nice with YouTueb's contentId again.