A short video of Balkan rock partridge from two years ago (Rock partridge at Mt Olympus) and the first person to share it with was Paschalis Dougalis.He told me that the video might be helpful in the future and now the time has come where we can see his amazing work above.
As he posted on Facebook: The four subspecies of the Rock partridge on a plate! From left to right, Alpine & Balkan rock partridge(above), and Italian & Sicilian rock partridges (below) Gouache colours.
More of his amazing art at: http://dougalis-wildlifeart.blogspot.gr/
and some more information on the Rock partridge: http://www.birdlife.org/datazone/species/factsheet/22678684