Singh, Vineet. “Rare Sighting of Near Threatened Grey-Headed Fish-Eagle <i>Icthyophaga ichthyaetus< I> (Horsfield, 1821) from Tikri Reserve Forest of Eastern Uttar Pradesh, India”. Indian Forester, vol. 141, no. 10, Oct. 2015, pp. 1104-5, doi:10.36808/if/2015/v141i10/80684.