Sweta, Arora, Devendra Pratap, and Chandana Haldar. “Stunning Facts of Bird Migration: Mini-Review”. Journal of Endocrinology and Reproduction 23, no. 1 (January 4, 2021): 45–48. Accessed April 26, 2024. http://www.informaticsjournals.com/index.php/jer/article/view/26216.