Ravens can be crafty creatures. From NATURE's RAVENS airing Sunday, December 9th at 8 p.m. EST on PBS (check local listings). To learn more about the program go to <a class="link" rel="nofollow" href="http://www.pbs.org/wnet/nature/ravens/index.html">http://www.pbs.org/wnet/nature/ravens/index.html</a>
