In the Nez Perce language, Pflap pflap means butterfly. Fields, meadows and hillsides of native flowers are common in this area, making it attractive to several species of butterflies that dine on flower nectar.
Other important insects at the Big Hole Battlefield include those found in and around water. These types of insect communities have strong effects on freshwater environments and are very important to fishes. By measuring the amount and types of aquatic insects (macroinvertebrates), park scientists also measure the health of streams and rivers. Mayflies (Ephemeroptera), caddisflies (Trichoptera), and stoneflies (Plecoptera) are some examples of organisms that inhabit park site waters. Understanding the current status of freshwater ecosystems will help guide management and restoration efforts, and provide insight into ecosystem change in a landscape with changing climate and dynamic human influences.