Group 1 - The core concept of the article revolves around the advancements in unmanned equipment, particularly focusing on a bionic bird capable of autonomous flight, real-time target recognition, and image transmission, which can communicate with allied forces upon detecting a target [1] - The bionic bird's flight mechanism is based on flapping wings rather than traditional propellers, making it resemble a real bird in appearance and significantly reducing noise levels [1] - The bionic bird can blend into local bird populations by varying its type based on geographical location, enhancing its stealth capabilities [4] Group 2 - Flapping wing aircraft come in various forms, including larger eagles, agile falcons, and small sparrows, showcasing the diversity in design and application [4] - The challenges in designing flapping wing aircraft compared to rotorcraft include lower noise levels, stability during flight, posture control, and improving flight efficiency, which are critical areas that require further research [6]