SOMESHWAR KUMAR. “MORPHOLOGICAL AND PHYSIOLOGICAL ADAPTATIONS OF BIRDS TO FIGHT. MODERN BIRD CLASS SYSTEMS”. International Journal of Multidisciplinary Research and Studies 3, no. 05 (May 15, 2020): 01–11. Accessed January 18, 2025. https://mail.ijmras.com/index.php/ijmras/article/view/566.