Researchers with U.S. Army Engineer Research and Development Center (ERDC), Construction Engineering Research Laboratory (CERL), Threatened and Endangered Species program place colored bands for individual identification on Red-billed Leothrix at Oahu, Hawaii, July 25, 2015. Individual identification of birds allows researchers to document movement and behavior of fruit-eating bird species, aiding in understanding of potential seed dispersal of endangered plants on Hawaii military installations. (U.S. Army Corps of Engineers photo)