5 thoughts on “Unicolored Tapaculo (Scytalopus unicolor): Revise global status?”
New distribution maps using the method described in Huang, et al. (2021, Batch-produced, GIS-informed range maps for birds based on provenanced, crowd-sourced data inform conservation assessments, PLoS ONE 16(11): e0259299. https://doi.org/10.1371/journal.pone.0259299) suggest the range of this species is considerably smaller than the previous assessment. Huang et al. find the Area of Habitat (AoH) to be 1,735 km2; the area of the previously published range map was 4,948 km2, meaning the new range map is only about one-third (35%) the size of the previous map. This largely appears to be because the previously published map and the map shown above in Annex 2 place the bulk of the species’s range to the east of where the species actually occurs, and because only a fraction of the range is suitable for occupation.
Prior to this assessment, no population estimate was provided. Given that the likely range size is smaller than previously used, the population estimate is likely smaller than would have been previously assessed. This supports the proposed uplisting of the species from LC to NT under the application of IUCN Red List Criteria in Annex 2, and potentially to VU.
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 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.
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
The final categorisation for this species has not changed. Unicolored Tapaculo is recommended to be listed as Near Threatened, approaching the thresholds for listing as threatened under Criteria B1ab(ii,iii,v); C2a(i).
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.
New distribution maps using the method described in Huang, et al. (2021, Batch-produced, GIS-informed range maps for birds based on provenanced, crowd-sourced data inform conservation assessments, PLoS ONE 16(11): e0259299. https://doi.org/10.1371/journal.pone.0259299) suggest the range of this species is considerably smaller than the previous assessment. Huang et al. find the Area of Habitat (AoH) to be 1,735 km2; the area of the previously published range map was 4,948 km2, meaning the new range map is only about one-third (35%) the size of the previous map. This largely appears to be because the previously published map and the map shown above in Annex 2 place the bulk of the species’s range to the east of where the species actually occurs, and because only a fraction of the range is suitable for occupation.
Prior to this assessment, no population estimate was provided. Given that the likely range size is smaller than previously used, the population estimate is likely smaller than would have been previously assessed. This supports the proposed uplisting of the species from LC to NT under the application of IUCN Red List Criteria in Annex 2, and potentially to VU.
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 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.
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
The final categorisation for this species has not changed. Unicolored Tapaculo is recommended to be listed as Near Threatened, approaching the thresholds for listing as threatened under Criteria B1ab(ii,iii,v); C2a(i).
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.