A monarch butterfly is shown on milkweed.

Courtesy of Donald Willin

A butterfly survey will start at 9:30 a.m. Saturday at Muscatatuck National Wildlife Refuge, 12985 E. U.S. 50, Seymour.

All interested volunteers are welcome and should bring binoculars and a butterfly guide if they have one. Rain will cancel the event.

For information, email [email protected].