The avifaunal diversity at six study sites (Sundernagar, Rewalsar, Maloh-Bandli WLS, Jogindernagar, Barot and Tattapani) of Mandi district in Himachal Pradesh was explored during 2008 (monsoon summer), 2009 (monsoon summer) and 2011 (spring). In total, 94 species of birds belonging to 12 orders and 30 families were recorded (38: Sundernagar, 28: Rewalsar, 22: Maloh-Bandli WLS, 28: Barot, 35: Jogindernagar, 58: Tattapani). The highest number of species were found in order Passeriformes (58) 61.7% followed by Piciformes (6) 6.3% and Columbiformes (6) 6.3% and least number (1) 1.0% in other 3 orders. The highest number of species were found in family Muscicapidae (12) 12.7% followed by Corvidae (10) 10.6% and Silviidae (8) 8.5% and least number (1) 1.0% in other 11 families. The relative abundance of species was Very Common (10), Common (31), Uncommon (44) and Rare (9). The total number of species observed in two seasons were Spring (56) and Monsoon Summer (65). Twelve species were found further additions to birdlist of Mandi district. The rare species Brown-capped Pygmy Woodpecker Dendrocopos nanus was also reported. One globally threatened (IUCN status) species Egyptian Vulture Neophron percnopterus was found to have relative abundance as Uncommon.