Breeding biology of black drongo (Dicrurus macrocercus) in Kumbhalgarh wildlife sanctuary, Rajasthan, India. Kumawat Pushkar, Chishty Nadim Wildlife, Limnology and Toxicology Research Laboratory Department of Zoology, Govt. MG College (UCOS Mohanlal Sukhadia University) Udaipur, Rajasthan Online published on 12 July, 2024. Abstract Black drongo (Dicrurus macrocercus) is a resident bird of India. It inhabits various microhabitats including agricultural field, forest, rural and urban habitats. Present study was carried out on egg clutch size variation, hatchling, and fledgling success along with threats affecting breeding of Black drongo in Kumbhalgarh Wildlife Sanctuary (KWLS), during December 2020 to December 2022. Total 378 eggs in 124 nests were observed during the study. Egg clutch size were 4 eggs (32.25%), 3 eggs (40.32%) to 2 eggs (27.41%). The incubation and nestling periods were approximately 13 days and 20 days respectively. Hatching success rate was 72.31% and fledgling success rate was 52.82%. Out of every 3 eggs average 1.55 individuals fledge successfully which indicates 51.05% success rate. Reason of low success rate includes hanuman langur (Semnopithecus entellus), tree lopping, uprooting of old trees, human encroachment, loud sounds, catastrophic activities, and egg predation by predators like Greater coucal (Centropus sinensis), Rufous treepie (Dendrocitta vagabunda), and Shikra (Accipiter badius). Top Keywords Black drongo, Clutch size, Hatchling, Fledgling, Breeding success, Kumbhalgarh. Top |