Spatial distribution of birdcommunity and their niche overlap on Media Luna wetland was the main objectiveof this work. A wide and heterogeneous use of the system resources were detected,mainly related to feeding and resting activities. By resting activity, mostof the species were gregarious, sharing branches and riparian grassland, showingoverlap among them. Whereas in feeding activity there was less evident overlap.Piscivorous egrets and herons (Ardeidae) showed high overlap among them, buttemporal resources partitioning of nocturnal species such as Nycticorax nycticoraxL, or different diet of Bubulcus ibis L, reduce the competence.Some species such as Jacana spinosa L realised all its activities inan only type of habitat with the lowest overlap with another species. Low interespecificaggressiveness was observed. Anthropicdisturbances may favoured some species abundance and possible decrease of anotherspecies. Bad management actions had high consequences in the study area. So,future management actions must consider information of use and resource partitioningof bird group.
