Rajathi, S., and S. Muthukrishnan. “Histological Study of Preen Gland in the Drongo (Dicrurus Macrocercus)”. Indian Journal of Veterinary Anatomy 29, no. 2 (September 18, 2018). Accessed June 21, 2026. https://epubs.icar.org.in/index.php/IJVA/article/view/83288.