I found the biggest of all, this Tibetan Raven (Corvus corax tibetanus) at an altitude of 18,000 feet close to Gurudongmar Lake located at Indo-China border in a group of 5-6 birds. Without tripod support a hand held Nikon D200 with telescopic lens was quite heavy then affecting the photography performance steadiness; specially when breathing was fast after climbing a hilltop to reach the object. I could see the result not as sharp as I wanted but some how I could get ravenís side profile to show you this incredible creature from the high altitude. I dedicate this photograph to Steve Pryor.
It is the largest and glossiest subspecies, with the longest throat hackles. Its bill is large and the bases of its neck feathers are grey.
How to differentiate between a crow and the raven: The raven can be easily confused with the large billed crow (Corvus macrorhynchos). The raven is much larger than a crow. It has very prominent hackles (pointed feathers) on its throat and has bristles on upper beak. The tail is distinctly wedge shaped.
Very nice photo of this special Raven in excellent sharpness, details and natural colours. The FG and BG seems to be a little overexposed, but the bird is great. Good low POV and composition.
This huge Tibetan Raven surely have large and prominent details, especially the beak is interesting to look at. The feathers around the beak are also very fascinating and it does not seem to be a very neat bird. (My personal opinion though). The sturdy built is very obvious, and I like the large feathers. The view from the side gives good indication of the actual size and built of the bird. Thanks for sharing. Best regards.