Kumaraguru, A., et al. “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, Oct. 2021, pp. 1018-20, doi:10.36808/if/2021/v147i10/156794.