Abstract
Time-activity budget of the Black-necked Storks was studied from January 1995 till June 1997 in Dudwa National Park, Uttar Pradesh, India. Black-necked Storks spent nearly 46% of their time resting. Except chasing, resting and drinking, no other activity differed significantly among storks in three years. Black-necked Storks spent more time for resting and drinking in summer (April, May and June) and chasing was more in winter (February and March). Time taken for resting varied between habitats among different pairs (N=3). Variations in time budget of Black-necked Storks were correlated with prey availability. Time spent foraging did not vary significantly during the study period and storks had a irregular feeding pattern, greatly influenced by other fish-eating birds. When food availability increased, congregation of other fish-eating birds also increased leading to the conflict with storks. The storks became aggressive when they tried to defend their territory from other fish-eating birds. Most of the aggressive encounters were observed between 0600 and 1000hr.