BOULDER CITY, Nev. — Wildlife officials are hoping to round up about 25 desert bighorn sheep from Boulder City and move them out as officials worry about a growing herd known to disrupt highway traffic, drink from water fountains and use sidewalks as bathrooms.

Scott Hansen, Boulder City's director of public works, says the herd is as large as he's seen it in roughly 10 years, as many as 80 at times during the summer. Hansen says city officials are concerned with traffic safety, as not only are sheep crossing Highway 93, an increasing number of drivers are pulling over or slowing down to take photos of the herd. Doug Nielsen, spokesman for the Nevada Department of Wildlife, says the department plans to count the herd by helicopter in the next two weeks and round up some sheep in October.