| effects of water level changes and wading bird abundance on the foraging behaviour of blacknecked storks ephippiorhynchus asiaticus in dudwa national park, india. | the effect of water level changes and wading birds' abundance on the foraging behaviour of the blacknecked stork (bns) ephippiorhynchus asiaticus was studied from january 1995 to june 1997 in dudwa national park, uttar pradesh. our observations indicate that bns territoriality increased as food levels became depleted, resulting in increased rates of aggression towards intruders. chasing or aggression was more intense during the early period (february and march) than the late period (april, may a ... | 2001 | 11568483 |