Tribune photo by Aaron Piper/ Muscatatuck National Wildlife Refuge volunteer Ralph Cooley, left, talks with Megan Keller, and three of her four children, from left, Annalise Keller, 2, Olivia Keller, 4, and Emily Keller, 5, on Saturday at the refuge's Wetlands Day. Also present Paul Keller, and Lexi Keller.