BirdLife species factsheet for Seychelles White-eye: http://www.birdlife.org/datazone/species/factsheet/22714018
Previous forum discussion on Seychelles White-eye: https://globally-threatened-bird-forums.birdlife.org/2014/08/seychelles-white-eye-zosterops-modestus-downlist-to-vulnerable/
This species is found on Conception and Mahé Islands of the Seychelles, and translocations to North Island, Frégate and Cousine have occurred. It is currently listed as Endangered on the basis that it has a very small population of <250 mature individuals.
Latest population estimates for these islands are Conception – c.340 in 2009 (Rocamora and Labiche 2009); Mahé – a decline down to 40 birds in 2011-2013 (G. Rocamora in litt. 2014); Frégate – 150 individuals in 2010/2011 (G. Rocamora in litt. 2014); North Island – 100 individuals (Havemann and Havemann 2014); Cousine – the translocation has probably been unsuccessful with no more than 5 individuals reported in 2013 (G. Rocamora in litt. 2014).
The population is estimated to be increasing due to an improvement in their habitats, particularly from rat eradications and habitat restoration on the islands where it has been translocated to (G. Rocamora in litt. 2007). The species has previously been listed as Endangered due to its population being very small (<250 mature individuals). However, these latest population estimates suggest that it is highly likely there have been >250 mature individuals for at least 5 years. This means that the species would no longer qualify as Endangered. However, its population is still estimated to be in the range of 500-650 individuals (Safford and Hawkins 2013), roughly equivalent to 330-430 mature individuals in addition to being found in only a very limited number of locations. Therefore, it would still qualify as Vulnerable under criteria D1+2.
We welcome comments on this proposed downlisting.
Havemann, C.J. and Havemann, T. 2014. North Island. Seychelles Wildlife News 14(October-December): 9-11.
Rocamora, G.; Labiche, A. 2009. Variation of abundance of land birds and reptile on Conception between the pre and post rat eradication periods (2005 to 2008). Annex 12. In: Rocamora, G; Jean-Louis, A. (ed.), Réhabilitation des Ecosystèmes Insulaires. Rapport annuel au secrétariat du FFEM. Quatrième année d’opérations 1/05/08 au 30/06/09, pp. 66-74. Island Conservation Society, Seychelles.
Safford, R. J.; Hawkins, A. F. A. 2013. The Birds of Africa. Volume VIII: The Malagasy Region. Christopher Helm, London.