6 thoughts on “Rondonia Antwarbler (Hypocnemis ochrogyna)”
A recent reassessment was carried out for this species in Brazil, which will still undergo consistency checks.
The habitat loss estimates, calculated according to the method proposed by Butti et al. (2022) — which uses remote sensing tools available on Google Earth Engine (https://earthengine.google.com/) and MapBiomas (https://mapbiomas.org/) —, indicate that, between 2015 and 2024, there was a 6.8% loss of habitat in areas classified as Forest Formation, within the species’ distribution polygon in Brazil, and a projection of 10.6% habitat loss for the species in the next decade. Therefore, according to criterion A, the species should also be classified as LC in Brazil.
Although the current national status for this species (near-endemic to Brazil, but also occurring in Bolivia) is VU in Brazil, the comment from Rosana Subirá indicates that it may be downlisted shortly on the national list, in which case the proposal would help bring the two lists into alignment.
This species occurs in a part of the Amazon that has suffered high rates of deforestation, but it appears relatively commonly encountered across a wide area and therefore presumably does have a large population. If there were evidence that the population size was close to 10,000 it could be considered for NT under C2a(ii).
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 2 February 2026. We will now analyse and interpret the information, and we will post a preliminary decision on this species’ Red List category on this page on 2 February 2026, when discussions will re-open.
We thank Rosana and Ben for their contributions. Based on available information, our preliminary proposal for the 2026 Red List would be to adopt the proposed classification outlined in the initial forum discussion. This will align the global assessment with the proposed status in the national assessment as outlined in Rosana’s comment. We will also align other information in the global assessment with the information presented by Rosana where possible.
As mentioned in Ben’s comment, it may prove justified to assess this species as Near Threatened listing if evidence is provided that the population is fewer than 10,000 mature individuals; or that the population size approaches 10,000 mature individuals and with sufficient evidence to infer continuing declines in the number of mature individuals (e.g. evidence that the species has disappeared from any sites following habitat loss, or evidence of high sensitivity to habitat loss, degradation, and/or fragmentation). Therefore, we would like to request further information on the population size (e.g. estimates of population density or direct population estimates).
There is now a period for further comments until the final deadline on 8 February 2026, after which the recommended categorisations will be put forward to IUCN.
The final 2026 Red List categories will be published on the BirdLife and IUCN websites later this year, 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 analyse and interpret the information, and a final decision on this species’ Red List category will be posted on this page on 16 February 2026.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Rondonia Antwarbler is recommended to be listed as Least Concern.
Many thanks to everyone who contributed to the 2026.1 GTB Forum process. The final Red List categories will be published on the BirdLife and IUCN websites later this year, following further checking of information relevant to the assessments by both BirdLife and IUCN.
A recent reassessment was carried out for this species in Brazil, which will still undergo consistency checks.
The habitat loss estimates, calculated according to the method proposed by Butti et al. (2022) — which uses remote sensing tools available on Google Earth Engine (https://earthengine.google.com/) and MapBiomas (https://mapbiomas.org/) —, indicate that, between 2015 and 2024, there was a 6.8% loss of habitat in areas classified as Forest Formation, within the species’ distribution polygon in Brazil, and a projection of 10.6% habitat loss for the species in the next decade. Therefore, according to criterion A, the species should also be classified as LC in Brazil.
Although the current national status for this species (near-endemic to Brazil, but also occurring in Bolivia) is VU in Brazil, the comment from Rosana Subirá indicates that it may be downlisted shortly on the national list, in which case the proposal would help bring the two lists into alignment.
This species occurs in a part of the Amazon that has suffered high rates of deforestation, but it appears relatively commonly encountered across a wide area and therefore presumably does have a large population. If there were evidence that the population size was close to 10,000 it could be considered for NT under C2a(ii).
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 2 February 2026. We will now analyse and interpret the information, and we will post a preliminary decision on this species’ Red List category on this page on 2 February 2026, when discussions will re-open.
Preliminary proposal
We thank Rosana and Ben for their contributions. Based on available information, our preliminary proposal for the 2026 Red List would be to adopt the proposed classification outlined in the initial forum discussion. This will align the global assessment with the proposed status in the national assessment as outlined in Rosana’s comment. We will also align other information in the global assessment with the information presented by Rosana where possible.
As mentioned in Ben’s comment, it may prove justified to assess this species as Near Threatened listing if evidence is provided that the population is fewer than 10,000 mature individuals; or that the population size approaches 10,000 mature individuals and with sufficient evidence to infer continuing declines in the number of mature individuals (e.g. evidence that the species has disappeared from any sites following habitat loss, or evidence of high sensitivity to habitat loss, degradation, and/or fragmentation). Therefore, we would like to request further information on the population size (e.g. estimates of population density or direct population estimates).
There is now a period for further comments until the final deadline on 8 February 2026, after which the recommended categorisations will be put forward to IUCN.
The final 2026 Red List categories will be published on the BirdLife and IUCN websites later this year, 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 analyse and interpret the information, and a final decision on this species’ Red List category will be posted on this page on 16 February 2026.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Rondonia Antwarbler is recommended to be listed as Least Concern.
Many thanks to everyone who contributed to the 2026.1 GTB Forum process. The final Red List categories will be published on the BirdLife and IUCN websites later this year, following further checking of information relevant to the assessments by both BirdLife and IUCN.