6 thoughts on “Cinnamon-vented Piha (Lipaugus lanioides): Revise global status?”
The population estimate of 240,000 mature individuals seems very high to me, given that a relatively small amount of the distribution is within suitable altitudinal range and has forest cover. Multiplying a density from a small-scale study at one site by 5% of the range is still liable to overestimate the population, in my view. I would suspect that the population is less than 100,000 mature individuals, but this is only a feeling based on very limited contact with the species. One option would be to remove the population estimates entirely as there are so few data to base these on for now. Another would be to clip out unsuitable altitudes and landcover from the distribution map for a more realistic estimate (present at reasonable density in 1% of mapped range?) Population trend has not been measured directly.
The higher-elevation forests this species depends on have been better conserved than lowland forests within its range, and large areas of suitable habitat are protected within national parks and other protected areas. Thus, while it has a patchy distribution, the species seems relatively secure. The proposal to downlist to LC, while it diverges from the current national status of NT, seems well justified.
In the national assessment the species is listed as NT approaching VU under A4c (assessed in 2019) but more recent data point to a very low rate of habitat loss. This leads to the same conclusion proposed here, that a NT to LC downlist should be done. This really seems more appropriate.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested in commenting. The window for consultation is now closed and we are unable to accept any more comments until 18 July 2022. We will now analyse and interpret the new information, and we will post a preliminary decision on this species’ Red List status on this page on 18 July 2022, when discussions will re-open.
Based on available information, our preliminary proposal for the 2022.2 Red List would be to adopt the proposed classifications outlined in the initial forum discussion. We recognise that a density estimate from a small part of the range is unlikely to be representative and that the population size value given in Annex 1 may be unfounded. This revision however does not affect the overall assessment of this species’ Red List status.
There is now a period for further comments until the final deadline on 24 July 2022, after which the recommended categorisations will be put forward to IUCN. The final 2022.2 Red List categories will be published on the BirdLife and IUCN websites in December 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested in commenting. The window for consultation is now closed and we are unable to accept any more comments. We will post a final decision on this species’ Red List status on this page on 1 August 2022.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Cinnamon-vented Piha is recommended to be listed as Least Concern.
Many thanks for everyone who contributed to the 2022.2 GTB Forum process. The final 2022.2 Red List categories will be published on the BirdLife and IUCN websites in December 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.
The population estimate of 240,000 mature individuals seems very high to me, given that a relatively small amount of the distribution is within suitable altitudinal range and has forest cover. Multiplying a density from a small-scale study at one site by 5% of the range is still liable to overestimate the population, in my view. I would suspect that the population is less than 100,000 mature individuals, but this is only a feeling based on very limited contact with the species. One option would be to remove the population estimates entirely as there are so few data to base these on for now. Another would be to clip out unsuitable altitudes and landcover from the distribution map for a more realistic estimate (present at reasonable density in 1% of mapped range?) Population trend has not been measured directly.
The higher-elevation forests this species depends on have been better conserved than lowland forests within its range, and large areas of suitable habitat are protected within national parks and other protected areas. Thus, while it has a patchy distribution, the species seems relatively secure. The proposal to downlist to LC, while it diverges from the current national status of NT, seems well justified.
In the national assessment the species is listed as NT approaching VU under A4c (assessed in 2019) but more recent data point to a very low rate of habitat loss. This leads to the same conclusion proposed here, that a NT to LC downlist should be done. This really seems more appropriate.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested in commenting. The window for consultation is now closed and we are unable to accept any more comments until 18 July 2022. We will now analyse and interpret the new information, and we will post a preliminary decision on this species’ Red List status on this page on 18 July 2022, when discussions will re-open.
Preliminary proposal
Based on available information, our preliminary proposal for the 2022.2 Red List would be to adopt the proposed classifications outlined in the initial forum discussion. We recognise that a density estimate from a small part of the range is unlikely to be representative and that the population size value given in Annex 1 may be unfounded. This revision however does not affect the overall assessment of this species’ Red List status.
There is now a period for further comments until the final deadline on 24 July 2022, after which the recommended categorisations will be put forward to IUCN. The final 2022.2 Red List categories will be published on the BirdLife and IUCN websites in December 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested in commenting. The window for consultation is now closed and we are unable to accept any more comments. We will post a final decision on this species’ Red List status on this page on 1 August 2022.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Cinnamon-vented Piha is recommended to be listed as Least Concern.
Many thanks for everyone who contributed to the 2022.2 GTB Forum process. The final 2022.2 Red List categories will be published on the BirdLife and IUCN websites in December 2022, following further checking of information relevant to the assessments by both BirdLife and IUCN.