When Carolina chickadees are breeding, they only eat and feed their babies caterpillars. In order for caterpillars to thrive, there needs to be native plants. The declining number of native plants in people’s yards have been hurting the Carolina chickadee population as a result. Chickadees are just one of many birds that rely on insects to survive, but it’s not just birds that need them. Spiders, frogs, foxes, bears, and a number of other animals all use insect larvae. Doug Tallamy, a professor of Entomology and Wildlife Ecology at the University of Delaware is part of a team that is working on a tool to make people think more about the plants they have in their yards.