Bhutan Bhutan: the Lateral Road A cross-country route through pristine Himalayan forest from Paro to Trashigang. JJanuary: Poor or no dataFFebruary: Poor or no dataMMarch: GoodAApril: BestMMay: BestJJune: Poor or no dataJJuly: Poor or no dataAAugust: Poor or no dataSSeptember: Poor or no dataOOctober: GoodNNovember: GoodDDecember: Poor or no data
Birds of the Indian Subcontinent Richard Grimmett et al., 2011 India, Pakistan, Nepal, Bhutan, Bangladesh, Sri Lanka and more Travelling birders
Birds of South Asia Pamela C. Rasmussen et al., 2012 India, Pakistan, Nepal, Bhutan, Bangladesh, Sri Lanka and more Experts and researchers
A Field Guide to the Birds of the Indian Subcontinent Krys Kazmierczak, 2000 India, Pakistan, Nepal, Bhutan, Bangladesh, Sri Lanka and more All levels