Dusky flying fox Dusky flying fox The dusky flying fox ("Pteropus brunneus"), also known as the Percy Island flying fox, is an extinct species of flying fox in the family Pteropodidae. It was endemic to Percy Island off the southeast coast of Mackay, Queensland, in the northeast corner of Australia. Only one specimen is known to exist. It was documented in 1859 and collected by Dobson in 1878. Since that record, no further documentation is known of this species. Currently, the specimen is located at the British Museum of Natural History, and was validated as a separate species in the late 20th century.
Guam flying fox a length of about , a wingspan of about , and a body weight of . It is very similar in appearance to the Chuuk flying fox ("Pteropus insularis"). The top of the head is greyish, the back, throat and underparts brown or dark brown and the side of the neck golden-brown. Little is known of the behaviour of this flying fox but it is likely to have fed on the fruits, flowers and foliage of evergreen shrubs and trees typical of the limestone forests that occur in the northern part of Guam. Nor is much known of its reproductive