Fox, A. D.; Hearn, R. D.; Cao, L.; Cong, P. H.; Wang, X.; Zhang, Y.; Dou, S. T.; Shao, Z. F.; Barter, M.; Rees, E. C. Preliminary Observations of Diurnal Feeding Patterns of Swan Geese Anser Cygnoides Using Two Different Habitats at Shengjin Lake, Anhui Province, China. Wildfowl 2013, 20-30.