A mechanical hummingbird is a robotic device designed to imitate the appearance and behavior of real hummingbirds. These devices are crafted with lightweight materials, often featuring artificial feathers, and are powered by batteries. Their key components include flapping wings, equipped with sensors and, in some cases, artificial intelligence for navigation. Mechanical hummingbirds find applications in surveillance, pollination, entertainment, and art. The challenges in their development include achieving power efficiency, precise navigation, and maintaining a balance between weight and functionality.