Join a Naturalist at Detweiler Park for an afternoon of discovery. Get down and dirty in search of the F.B.I. (fungus, bacteria and invertebrates) which live under logs and rocks. Observe them up-close with the help of magnifiers. Learn how something so small can make such a large impact on our environment. Dress for the weather and wear appropriate hiking shoes. Ages 5-10, one chaperone per child. Space is limited. Pre-registration required.