6 thoughts on “Red-tailed Vanga (Calicalicus madagascariensis): Revise global status?”
The window for consultation is now closed and we are unable to accept any more comments until 21 February 2022. We will now analyse and interpret the new information, and we will post a preliminary decision on this species’s Red List status on this page on 21 February 2022, when discussions will re-open.
Based on available information, our preliminary proposal for the 2022.1 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 on 27 February 2022, after which the recommended categorisations will be put forward to IUCN.
The final 2022.1 Red List categories will be published on the BirdLife and IUCN websites in July 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.
I endorse the rigorous application of RL criteria. However I do not consider that the Global Forest Watch estimate of 24% forest loss over 10 years is realistic. In some parts of the species’ range (central W Madagascar) it is higher than this, but the great majority of the species’ range is in the east, where deforestation rates in the majority of sites, especially in protected areas is lower, and the species remains one of the commonest small passerines in the eastern forest. I suggest therefore that the species remain LC.
This comment applies to this species and also Madagascar Wood-rail. These are both common and widespread in Madagascar’s forests – the vanga in humid and (more patchily) dry forest, the rail just in the humid. There are probably tens of other forest-dependent species with somewhat similar distributions and habitat needs, and all must be declining because of forest loss, and it seems strange to pick out these two for uplisting. As happened for Sundaic lowland species some years ago, can I suggest a more systematic look at all Madagascar forest species traditionally seen as least concern (or in some cases NT), ensuring inputs from more people and discussing how the GFW data are being applied, for a future year? In that case I would leave these two species unchanged for now.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested by so many people in commenting. The window for consultation is now closed and we are unable to accept any more comments. We will analyse and interpret the new information, and we will post a final decision on this species’ Red List status on this page on 7 March 2022.
Recommended categorisation to be put forward to IUCN
Following further review regarding the specie’s habitat limitations, the recommended categorisation for this species has been changed. Red-tailed Vanga is now recommended to be listed as Least Concern.
Many thanks for everyone who contributed to the 2022.1 GTB Forum process. The final 2022.1 Red List categories will be published on the BirdLife and IUCN websites in July 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.
The window for consultation is now closed and we are unable to accept any more comments until 21 February 2022. We will now analyse and interpret the new information, and we will post a preliminary decision on this species’s Red List status on this page on 21 February 2022, when discussions will re-open.
Preliminary proposal
Based on available information, our preliminary proposal for the 2022.1 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 on 27 February 2022, after which the recommended categorisations will be put forward to IUCN.
The final 2022.1 Red List categories will be published on the BirdLife and IUCN websites in July 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.
I endorse the rigorous application of RL criteria. However I do not consider that the Global Forest Watch estimate of 24% forest loss over 10 years is realistic. In some parts of the species’ range (central W Madagascar) it is higher than this, but the great majority of the species’ range is in the east, where deforestation rates in the majority of sites, especially in protected areas is lower, and the species remains one of the commonest small passerines in the eastern forest. I suggest therefore that the species remain LC.
This comment applies to this species and also Madagascar Wood-rail. These are both common and widespread in Madagascar’s forests – the vanga in humid and (more patchily) dry forest, the rail just in the humid. There are probably tens of other forest-dependent species with somewhat similar distributions and habitat needs, and all must be declining because of forest loss, and it seems strange to pick out these two for uplisting. As happened for Sundaic lowland species some years ago, can I suggest a more systematic look at all Madagascar forest species traditionally seen as least concern (or in some cases NT), ensuring inputs from more people and discussing how the GFW data are being applied, for a future year? In that case I would leave these two species unchanged for now.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested by so many people in commenting. The window for consultation is now closed and we are unable to accept any more comments. We will analyse and interpret the new information, and we will post a final decision on this species’ Red List status on this page on 7 March 2022.
Recommended categorisation to be put forward to IUCN
Following further review regarding the specie’s habitat limitations, the recommended categorisation for this species has been changed. Red-tailed Vanga is now recommended to be listed as Least Concern.
Many thanks for everyone who contributed to the 2022.1 GTB Forum process. The final 2022.1 Red List categories will be published on the BirdLife and IUCN websites in July 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.