ST. PAUL, Minn. -  St. Paul is enlisting a hungry, hooved army in its fight against invasive plants.

Thirty goats were delivered to Indian Mounds Regional Park Tuesday afternoon, tasked with the challenge of controlling the spread of invasive species along the Mississippi River.

The fleet of goats is starting to eagerly eat its way along the bluffs. They will stay inside fenced-in sections of the regional parks along the river, monitored daily by caretakers.

The goats were provided by Goat Dispatch, a company that rents out goats for just this type of assignment.

The environmentally friendly effort is led by St. Paul's Great River Passage initiative and the city's Parks and Recreation National Resources Section.