A study on the Diversity of Avifauna in Kottuli Wetland, Kerala was conducted from July 2014 to September 2015. During the study 94 species of Birds were Identified. The available data shows that water birds dominated in the area by population abundance. It is an ideal habitat for foraging and breeding of both terrestrial and water birds of resident species. A good population of migrant species also noticed. The presence of near threatened species Oriental white ibis, darter, painted stork point out by IUCN were also noticed, breeding pair of Black kite and Brahminy kite observed in the study site. The most abundant bird species were Black kites and little cormorants. The most abundant family were Ardeidae (8.5 %), followed by Alcedinidae, Rallidae and Accipitridae (4.25 %) respectively. The most abundant category were common resident type (77.65 %) and the least occurred category were common migrant type (2.12%).