A bird's nest can be woven, stacked, molded or stitched from surprisingly ordinary materials. Explore the movements, material choices and structural tradeoffs that help nests hold together. Inside this episode: - There is no single bird nest - The foundation - Friction and entanglement - Weaving, knotting, and tucking - Mud, silk, and other binders Sources include Current Biology, Nests and nest building in birds, Avian Biology Research, design and function of birds' nests, and Construction patterns of birds' nests. This episode is a researched narrative summary. Historical records may be incomplete, translated differently, or interpreted differently by scholars. We distinguish documented facts, estimates, disputed interpretations, and later stories where material. Corrections are logged and incorporated into future editions. Follow Birds Beyon ...