and tigers, as well as spotting various birds, animals, reptiles, and amphibians. Career Sálim Ali introduced Humayun to the Bombay Natural History Society (BNHS). He became a member of the Society in 1931, the year in which his first note titled "Eleven Koel eggs in a Crow's nest" was published in the Journal of the Bombay Natural History Society (JBNHS). His second note, published in the journal in 1934, earned him further acclaim. He published 356 notes in his lifetime and these covered birds, snakes, frogs and other fauna. He authored 270 scientific papers and 50 book reviews. A six-part series based on the specimens he collected when at St Xavier's college and of the birds he had spotted in and around Bombay, co-authored by Salim Ali, and titled "The Birds of Bombay and Salsette", was published between 1936 and 1938 in the Journal of the Bombay Natural History Society. Subsequently, the two continued to document their observations of the birds spotted in these areas in the journal. Charles McCann, the assistant curator at the BNHS, helped Humayun in identifying the specimens he had collected during his excursions. The two became good friends. After McCann's death, Humayun donated money towards the Charles McCann Vertebrate Fieldwork Fund instituted by the BNHS to promote field research. Humayun was elected to the Executive Committee of the BNHS in 1942. He was elected Joint Honorary Secretary of the BNHS along with Sálim Ali in 1949. During his tenure as the Honorary Secretary at BNHS (1949–62), three important milestones were achieved: He was instrumental in drafting the Bombay Wild Animals and Wild Birds Protection Act of 1951. The law aimed to curb the rampant poaching and subsequent destruction of wildlife that started after India gained independence in 1947. He obtained permission from the Prince of Wales Museum to house the BNHS in its premises. He negotiated a grant of 3.5 lakh (350,000) rupees from the Central Government for the BNHS building. He catalogued the specimens in the collection of the BNHS. He was the editor of the Journal of the Bombay Natural History Society from 1960 to 1962, along with Sálim Ali and H. Santapau. After his stint as the honorary secretary of the BNHS ended in 1962, he continued to serve on the executive committee. From 1987 to 1992, he served as the vice president of the committee. In 1993, the BNHS conferred upon