BirdLife species factsheet for Bonin White-eye Bonin White-eye Apalopteron familiare is restricted to the Ogasawara Islands, Japan, where it has been recorded from all three island groups, the Muko-jima, Chichi-jima and Haha-jima Islands. It is currently listed as Vulnerable under criterion C2a(ii) because it was thought to have a small, declining population as a result of the historical clearance of primary forest and continued threats to secondary forest from tourism and infrastructure developments, as well as from introduced pest species. The global population was previously estimated to number c.2,500-9,999 mature individuals (based on an estimate of 3,000-4,000 individuals on Haha-jima island (Kato et al. 1995), plus information from the other islands [BirdLife International 2001]). However, recent information suggests that this existing figure was an underestimate (S. Tadashi in litt. 2012, K. Kawakami in litt. 2012). Recent estimates, based on quantitative methods, suggest that the total population numbers 10,000-15,000 mature individuals (K. Kawakami in litt. 2012). Also, following considerable historical losses, the range and population are now thought to be stable (K. Kawakami in litt. 2012). The majority of the population is found on the main island, with only a few hundred individuals present on the two satellite islands, and analysis of DNA reveals that dispersal between the islands is very rare. Thus, they should be regarded as three distinct populations (Kawakami et al. 2008), and not one subpopulation as previously thought. Although limited to three islands, its distribution has not declined since World War II (K. Kawakami in litt. 2012). If this information is confirmed, and the population of this species is >10,000 mature individuals, is not in continuing decline and the vast majority, but not all individuals are not in one subpopulation, it would no longer qualify as Vulnerable and would warrant downlisting to Least Concern, or Near Threatened if it was still considered close enough to the the thresholds for Vulnerable under criterion C2a(ii) of the IUCN Red List. Information is requested on the population size, trends and distribution of this species. Additional comments on the proposed downlisting are welcome. References: BirdLife International. (2001) Threatened birds of Asia: the BirdLife International Red Data Book. BirdLife International: Cambridge, U.K. Kato, M., Numata, M., Watanabe, K. and Hata, M. (1995) Natural monuments of Japan. Kodansha: Tokyo. Kawakami, K., Harada, S., Suzuki, T. and Higuchi, H. (2008) Genetic and Morphological Differences Among Populationsof the Bonin Islands White-eye in Japan. Zoological Science 25, 882–887.
- Africa (169)
- Americas (321)
- Archive (716)
- Asia (266)
- Australia (35)
- Europe & Central Asia (70)
- Illegal killing of birds (2)
- Middle East (47)
- Pacific (103)
- Species Group (189)
- Taxonomy (158)
Five most recent topics
- Review of illegal killing of birds in Europe, the Arabian Peninsula, Iraq and Iran
- Shy Albatross (Thalassarche cauta): uplist from Near Threatened to Vulnerable?
- Amsterdam Albatross (Diomedea amsterdamensis): downlist from Critically Endangered to Endangered?
- Okarito Brown Kiwi (Apteryx rowi): Downlist to Vulnerable?
- Northern Brown Kiwi (Apteryx mantelli): downlist to Vulnerable?
- Hot off the Press! ‘European Birds of Conservation Concern’ May 22, 2017BirdLife unveils its latest publication, ‘European Birds of Conservation Concern’, in Parma Italy. This essential handbook will help every country in Europe to identify their bird conservation responsibilities. ‘Birds know no borders’ – this oft-cited observation is especially pertinent in Europe, writes Dr. Ian Burfield and Anna Staneva in their introduction to BirdLife International’s […]
- Europe celebrates ‘Natura 2000 Day’! May 22, 2017As Europeans celebrate their first official ‘Natura 2000 Day’, Asunción Ruiz, director of SEO/BirdLife Spain, tell Spanish press agency EFE why “the planet needs Europe’. It’s one of the European Union’s single greatest achievements, yet millions of Europeans are not aware of its existence. For the past 25 years, the Natura 2000 network has probably […]
- The Bird Bulletin - Vol. 8 May 19, 2017Welcome to the latest edition of ‘The Bird Bulletin’ – our weekly news brief. Every Friday morning, we bring you bite-sized updates from across Europe & Central Asia – kick start your weekend with “what a little bird told me!” THANK (E)U FOR CELEBRATING NATURE! – This week the EU officially declared 21st May […]
- Hot off the Press! ‘European Birds of Conservation Concern’ May 22, 2017