I've scouted all round the lake area and between the new outpost (old Swamp Camp) and Nus Lull, and can't find the herd.
This is about the closet to a herd I can find, but they are really spread out and the densest area, if you can call around 6 dense, is right next to Drone Coordinators and Attackers. Not worth the effort unless you only need a few.
Less than 1100 to go to complete the 10k, which I could have easily finished yesterday with the old spawn, and now I can't find enough worth pulling out a weapon for.