The Bureau of Land Management next week is expected to issue a decision on whether to pursue a long-term plan for reducing wild horse numbers through a variety measures, including helicopter roundups, bait trapping and fertility control treatment, in a herd management area in Rio Blanco County about 50 miles north and east of Grand Junction. The agency estimates that 838 horses currently live in the Piceance-East Douglas Herd Management Area generally in central Rio Blanco County east of Colorado Highway 139 and south of Colorado Highway 64. The BLM has a target management level of 135-235 wild horses there, which it says would maintain a thriving ecological balance and healthy rangelands in keeping with the agencyâs multiple-use mission for the area.