Nest architecture is a research area that focuses on the construction and design of nests built by various species of animals, particularly birds and insects. Researchers in this field study the materials, shapes, sizes, and locations of nests, as well as the behaviors and adaptations that drive nest-building. They aim to understand how nest architecture influences the reproductive success and survival of species, as well as how environmental factors and evolutionary pressures shape nest-building strategies. This research area provides insights into animal behavior, ecology, and evolution.