Guam flying fox

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Guam flying fox
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Pteropodidae
Genus: Pteropus
P. tokudae
Binomial name
Pteropus tokudae
Tate, 1934
Distribution of Pteropus tokudae.png

The Guam flying fox (Pteropus tokudae), also known as the little Marianas fruit bat, was a tiny megabat from Guam in the Marianas Islands in Micronesia that was confirmed extinct due to hunting or habitat changes.[2] It was first recorded in 1931 and was observed roosting with the larger and much more common Mariana fruit bat. The last specimen was a female found roosting at Tarague cliff in March 1967, but it escaped capture. An unconfirmed sighting took place sometime during the 1970s and no other individuals have been sighted since then.[2]


The Guam flying fox has a length of about 15 cm (6 in), a wingspan of about 70 cm (28 in), and a body weight of 152 g (5.4 oz). 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.[3]


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 habits, but an individual observed in 1968, when a female was shot, was accompanied by an immature individual which suggests that there may have been some on-going parental care.[3]


There are no confirmed records of sightings of this bat since the 1970s and the IUCN lists it as being "Extinct". When it was more plentiful it was hunted by humans for food, which may have contributed to its extinction. Another factor may have been the introduction into the island of the predatory Brown tree snake (Boiga irregularis).[2] In September 2021, the U.S. Fish and Wildlife Service officially declared the species extinct.[4]


  1. ^ "Endangered and Threatened Wildlife and Plants; Removal of 23 Extinct Species From the Lists of Endangered and Threatened Wildlife and Plants". Retrieved 2022-06-13.{{cite web}}: CS1 maint: url-status (link)
  2. ^ a b c d Bonaccorso, F.J.; Helgen, K.; Allison, A.; Wiles, G. (2020). "Pteropus tokudae". IUCN Red List of Threatened Species. 2020: e.T18763A22088402. doi:10.2305/IUCN.UK.2020-3.RLTS.T18763A22088402.en. Retrieved 11 November 2021.
  3. ^ a b Jeffery Rebitzke (2002). "Pteropus tokudae: Guam flying fox". Animal Diversity Web. University of Michigan. Retrieved 2013-12-29.
  4. ^ "U.S. Fish and Wildlife Service Proposes Delisting 23 Species from Endangered Species Act Due to Extinction". United States Fish and Wildlife Service. September 30, 2021. Retrieved September 30, 2021.


  • Flannery, Tim and Peter Schouten (2001). A Gap in Nature. Published by William Heinemann