Attracting different bird species; dual-flush toilet valves

Landscape contractor Roger Cook visits a nature center to learn how to attract many species of birds using different types of birdfeeders and birdseed. Afterward, general contractor Tom Silva and host Kevin O'Connor visit a home center to identify various types of interior moldings and their uses. Then Roger, Tom, Kevin and plumbing and heating expert Richard Trethewey ask, "What is it?" Afterward, Richard helps a homeowner conserve water by installing a new type of "dual-flush" valve in his existing toilet.