Bernier’s Vanga (Oriolia bernieri): uplist from Vulnerable to Endangered?

This discussion was first published as part of the 2016 Red List update. At the time a decision regarding its status was pended, but to enable potential reassessment of this species as part of the 2018 Red List update this post remains open and the date of posting has been updated.

BirdLife species factsheet for Bernier’s Vanga: http://www.birdlife.org/datazone/species/factsheet/22708054

This species is known from several sites in the lowland rainforest of central-east of Madagascar, and it is scare and patchily distributed throughout its range. It is currently classed as Vulnerable because of suspected continuing declines in both its small population and its small range, owing to the destruction and severe fragmentation of its habitat, mainly as a result of subsistence agriculture (Jenkins 1987).

Recent modelling analyses investigating the possible impact of climate change have suggested that this species’s ecological niche could entirely disappear over the 50 year period between 2000 and 2050 with a reduction in its maximum probability of presence of 76% (Andriamasimanana and Cameron 2013). Assuming a linear decrease, this would equate to a reduction in its ecological niche of c.63% over the next 3 generations for this species (21 years). Thus it would qualify to be uplisted to Endangered under criterion A3bc.

We welcome any comments on this proposed uplisting.

References

Andriamasimanana, R. H.; Cameron, A. 2013. Predicting the impacts of climate change on the distribution of threatened forest-restricted birds in Madagascar. Ecol. & Evol. 3: 763-769.

Jenkins, M. D. 1987. Madagascar: an environmental profile. International Union for Conservation of Nature and Natural Resources, Cambridge, U.K.

This entry was posted in Africa and tagged , . Bookmark the permalink.

3 Responses to Bernier’s Vanga (Oriolia bernieri): uplist from Vulnerable to Endangered?

  1. James Westrip (BirdLife) says:

    Based on available information, our proposal for the 2016 Red List would be to pend the decision on this species and keep this discussion open until 2017, while leaving the current Red List category unchanged in the 2016 update.

    Final 2016 Red List categories will be published on the BirdLife and IUCN websites in early December, following further checking of information relevant to the assessments by both BirdLife and IUCN.

  2. Andy Symes (BirdLife) says:

    Preliminary proposals

    Based on available information, our proposal for the 2017 Red List would be to pend the decision on this species and keep this discussion open until 2018, while leaving the current Red List category unchanged in the 2017 update.

    There is now a period for further comments until the final deadline of 4 August, after which the recommended categorisations will be put forward to IUCN.

    Final 2017 Red List categories will be published on the BirdLife and IUCN websites in early December, following further checking of information relevant to the assessments by both BirdLife and IUCN.

  3. James Westrip (BirdLife) says:

    Preliminary proposals

    Based on available information, our preliminary proposal for the 2018 Red List would be to adopt the proposed classifications outlined in the initial forum discussion.

    There is now a period for further comments until the final deadline in mid-July, after which the recommended categorisations will be put forward to IUCN.

    Please note that we will then only post final recommended categorisations on forum discussions where these differ from those in the initial proposal.
    The final 2018 Red List categories will be published on the BirdLife and IUCN websites in November, following further checking of information relevant to the assessments by both BirdLife and IUCN.

Leave a Reply

You have to agree to the comment policy.

This site uses Akismet to reduce spam. Learn how your comment data is processed.