The recently new discovery species Bare-faced Bulbul at Na Hin forest, Khammouane province, has attracted birders around the World to visit this limestone karst. Some of the very best species also recently found at Na Hin Forest now are Red-headed Woodpecker, Pale-headed Woodpecker, Blue-naped Pitta, Yellow-vented and White-bellied Green Pigeons, Red-vented Barbet, Spot-bellied Eagle-Owl, Rufous-tailed Robin, Green Cochoa, Pale-capped Pigeon and Woolly-necked Stork. Other sought-after species include Eared Pitta, Blue-bearded Bee-eater, White-browed Piculet, Mountain Hawk Eagle, Ruddy Kingfisher, Oriental Hobby, Heart-spotted Woodpecker, Nepal House-Martin, Silver-backed Needletail, Limestone Wren Babbler, Green-backed Tit, Silver Pheasant, Spot-necked Babbler, Fork-tailed Sunbird, Rufous-throated Fulvetta, Wreathed Hornbill, Rufous-winged Buzzard and White-tailed Flycatcher.