Present study comprises a comprehensive dataset about the Avifaunal diversity of one of the climatic transition zone i.e., Southern Nagur, Rajasthan. The Study was conducted under the classified six different microhabitats i.e., Agricultural Field Plains, Sambhar Lake and Other Waterbodies, Aravalli Hill Patches, Urban Settlements, Scrub Thorn Forest and Open Grasslands & Wastelands. The key aspect of present study is to provide well structured and extensive information on the avian diversity, their distribution and their habitat association at the study area. A total of 191 Avifaunal species belonging to 21 Orders and 61 Families were recorded from study area. A total of 7 Feeding Guilds were observed in the study area viz., Carnivores, Frugivores, Granivores, Herbivores, Insectivores, Nectivores and Omnivored. The Migratory status and IUCN status of the observed species was also assessed. Jaccard and Sorenson index’s was highest for the Agricultural and Grassland Microhabitats.