One invasive plant intern is needed to assist the U.S. Fish & Wildlife Service with invasive plant treatment, monitoring, and mapping at the Baca National Wildlife Refuge in Southern Colorado.   Primary duties include treatment of high priority weed-infested areas of the refuge by applying herbicide on target plant species.  ATVs with boom sprayers and/or wands, and backpack sprayers will be the primary mode of herbicide application.  In certain instances, hand-pulling or mowing may be required.  Interns will keep detailed records of treatment efforts, including herbicides used, target plants, herbicide amount applied, application period, acres treated, and efficacy percentage.  Work will be primarily outside, with a minor amount of office-related duties (mostly focus