A. Kumaraguru, V. S. Saraswathi, M. Tharik, S. Ramasubramaniam, and T. Brinda, “First Sighting of Himalayan Griffon (<i>Gyps himalayensis</i>) in Point Calimere Wildlife and Bird Sanctuary, Nagapattinam, Tamil Nadu”, Indian Forester, vol. 147, no. 10, pp. 1018–1020, Oct. 2021.