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

Distribución y solapamiento espacial de las aves acuáticas y ribereñas en un humedal