Attributes / relations provided by
♦ 1del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 2SEASONAL CHANGES IN THE DIET OF JAPANESE GIANT FLYING SQUIRRELS IN RELATION TO REPRODUCTION, Takeo Kawamichi, Journal of Mammalogy, 78(1):204-212, 1997