Birds are distributed worldwide with their diverse ecological functions in different types of ecosystems. The present study was conducted to estimate the avifaunal diversity in one of the urban water reservoirs of Bhavnagar city - Gaurishankar Lake, popularly known as Bortalav and its adjoining areas from December 2020 to November 2021. Bortalav and its adjoining areas are situated in the urban landscape of Bhavnagar consisting of various types of habitats that attracts different varieties of avifauna. India has around 1341 species of birds recorded so far, out of which 612 are reported from Gujarat. The present study recorded 235 species (21 Orders, 65 Families and 155 Genera) with maximum diversity of order Passeriformes (84 species). Out of total 235 species, 220 species are under Least concern category, 10 species are Near threatened, 4 species are Vulnerable and a species (Aquila nipalensis) is under Endangered category of IUCN. Among the recorded species, 103 species are Common, 80 species are Uncommon, 41 species are Occasional and 11 species are Rare in the study area. The present study denotes the status of avifaunal diversity of Bortalav provided with its present threats to the habitat and birds which will aid in future research perspective and conservation strategies.