I'm a birder living in Mongolia. I'm planning a late July week in southern Mongolia to find some cool species (Wallcreeper, Lammergeier, Relict Gull, etc) and would love some company. I'm hiring a driver and jeep for some camping and birding Yolyn Am, Flaming Cliffs and Boon Tsagaan Lake. We'll see the impressive Khongor Dunes, too. Very inexpensive - about 400 USD.
Give me a shout if you're interested - james@dsmongolia.org