Fighting Lammergeiers

These are Bearded Vultures, or Lammergeiers, engaged in an ariel duel over (presumably) food. The one on the left is a juvenile, and the one on the right an adult. If anyone here has seen Sir David Attenborough's The Life of Birds, you many remember the Lammergeiers are the ones that drop bones on rocks and eat the marrow. (If you're interested in birds, you should really see it, great series, by the way). The sketch is based on a photograph on the internet, taken at Giant's Castle by one Mitchell Krog.