At least 50 bird species are summer visitors to GHNP, including the Eurasian woodcock, several cuckoos, the oriental turtle dove, grey nightjar, ashy drongo and house martin, as well as many species of flycatcher, warbler, chat and thrush.
Some resident species move to lower altitudes within the Beas catchment for the harshest mid-winter period, although few observations of this have been made. A few species migrate to the park in winter, including the grey wagtail, rufous-streaked accentor and Güldenstädt’s redstart. None of GHNP’s bird species can currently be confirmed as passage migrant ‒ stopping over en route to a final destination ‒ although it is possible that the short-eared owl, fork-tailed swift, Eurasian chiffchaff and Tickell’s leaf warbler fall into this category.