1. Fleming, R. L. (1968). Nepal birds: Supplement to Biswas' list. Journal of the Bombay Natural History Society 65(2):326-334.
2. Ripley, S. D., II (1982). A synopsis of the birds of India and Pakistan together with those of Nepal, Bhutan, Bangladesh, and Sri Lanka. Second edition. Bombay Natural History Society, Bombay, India.
3. Inskipp, C., and T. Inskipp (1986). Some important birds and forests in Nepal. Forktail 1:53–64.
4. Tymstra, Y. R. (1993). Some bird observations from the lower Apsuwa River, east Nepal. Forktail 8:53–64.
5. Inskipp, C., and T. Inskipp (1994). Birds recorded during a visit to Bhutan in spring 1993. Forktail 9:121-143.