For another bird finial of slightly larger size, but with tail feathers positioned horizontally and with a less hooked beak, see the example included in the exhibition, Arts of Ancient China, J J Lally & Co., New York, May - June, 1990, Catalogue, no. 8, where the author notes, "In the Han dynasty it was the custom for men who achieved seventy years of age to be granted a royal staff (wang chang) decorated with a finial in the form of a dove. The man who displayed a dove-form finial on his walking staff was then afforded great respect and was entitled to special privileges in deference to his age"
For other examples see Jessica Rawson and Emma Bunker, Ancient Chinese and Ordos Bronzes, Hong Kong, 1990, Catalogue, no. 82; Regina Krahl, Chinese Ceramics from the Meiyintang Collection, vol. 1, London, 1994, p. 48, fig. 13; and C. T. Loo & Co., Exhibition of Chinese Arts, November, 1941 - April, 1942, Catalogue, no. 150