In a paper recently published in the journal Biological Conservation, an international team of conservationists highlights the importance of tree dens for pandas raising infants in native habitats. The study, conducted in Fengtongzai and Foping Nature Reserves in China, analyzed the difference in microhabitats of cave dens and tree dens used by female pandas. The result of the research suggests that conservation efforts need to take into account key resources, such as large old trees that provide important microhabitats that support rare and endangered wildlife.