Captain Robert Cecil Beavan (1841 - 3 February 1870), corresponding member of the Zoological Society of London, served in India with the Bengal Staff Corps for 10 years. During his short life he collected specimens of birds and eggs at various locations. He contributed notes to the Ibis journal as wells as the Proceedings of the Zoological Society of London. He also collaborated with Allan Octavian Hume. His collection of eggs and birds went into the Natural History Museum through the Tweeddale and Godman-Salvin collections.
In 1864 Beavan worked at Barrackpore and the winter of that year was spent in the Maunbhoom District, an area studied earlier by Samuel Tickell and Edward Blyth. His notes on this period were published in The Ibis (1865) entitled "Notes on various Indian Birds". While still in service he collected in the Andaman Islands and with additional information from Colonel Robert Christopher Tytler, wrote "The Avifauna of the Andaman Islands" in the Ibis in 1867.
Beavan was sent home once to Britain due to bad health, and on his second such trip, he died at sea.
The species Pyrrhula erythaca, first collected by him, is sometimes called Beavan's Bullfinch (Also called Gray-headed Bullfinch).
His brother, Reginald, a Lieutenant in the 22nd Punjab Native Infantry was a keen sports hunter and contributed numerous bird specimens.
Beavan's chief publications are a series of notes in the Ibis between 1865 and 1868. These included many notes of Colonel R C Tytler.
Reginald appears to have communicated some of Robert's papers to the Proceedings of the Zoological society after his death. The Handbook of the freshwater fishes of India, was published posthumously in 1877 and is attributed to "Capt. R. Beavan, Bengal Staff Corps CMZS".