Theare no protected sites of nature in this region of Serbia, but Gruza lake is one of the places where migratory birds can rest and re-fuel their fat store. Around 150 bird species have been recorded on and around the lake.

Birds include: Pigmy Cormorant, Great Bittern, Little Bittern, Great White Egret, Squacco Heron, Purple Heron, White-tailed Eagle, Marsh Harrier, Hobby, Water Rail, Little Crake, Black-winged Stilt, Snipe, Marsh Sandpiper, Black Tern, Turtle Dove, Cuckoo, Scops Owl, Little Owl, Long-eared Owl, Kingfisher, Green Woodpecker, Syrian Woodpecker, Lesser-spotted Woodpecker, Wryneck, Skylark, Sand Martin, Yellow Wagtail, Redstart, Stonechat, Sedge Warbler, Savi's Warbler, Great Reed Warbler, Marsh Warbler, Spotted Flycatcher, Red-backed Shrike, Tree Pipit, Yellowhammer, Ortolan Bunting, Corn Bunting.