Complex sentence: Wegge found that there was no evidence of competition between the domestic sheep being illegally grazed and the wild Marco Polo sheep, and that most of the illegal hunting was not being done by local Wakhi residents, but by Pakistani military and civil officials.
Split into simpler sentences: Wegge found that there was no evidence of competition between the domestic sheep being illegally grazed and the wild Marco Polo sheep. He also found that most of the illegal hunting was not being done by local Wakhi residents, but by Pakistani military and civil officials.