A total of 423 bird species has been recorded. The park supports the highest population of Bengal floricans in Nepal. It is the western limit of swamp francolin, Jerdon's bushchat, rufous-rumped grassbird, chestnut-capped babbler and Jerdon's babbler. For yellow-eyed babbler it is the north-western limit and it is the eastern limit of Finn's weaver. It is also the most important regular wintering site of Hodgson's bushchat. Forest birds include spot-bellied eagle owl, dusky eagle owl, rufous-bellied eagle and Oriental pied hornbill. The forests are also important for great slaty woodpecker and white-naped woodpecker. The white-rumped vulture, slender-billed vulture, lesser adjutant, grey-headed fish eagle, darter and rufous-rumped grassbird are breeding residents. Sarus crane, painted stork and bristled grassbird are summer visitors. Greater racquet-tailed drongo, white-capped water redstart, rusty-tailed flycatcher and rufous-gorgeted flycatcher are winter visitors but they are not common.