Here's a delightful classic title - the author had an "omen-nomen": Vogel, Jean Philippe, (1871-1951). The goose in Indian literature and art. Leiden, E. J. Brill, 1962. vi, 74 p. 12 plates. 28 cm. Vogel points out that the swan as such is not native to India. The haMsa is - of course - a goose. Cheers, Alex