7 thoughts on “Grey-throated Leaftosser (Sclerurus albigularis)”
This species have some races/subspecies that could be considered endemic or restricted of certain habitats or ecosystems (E.g., Santa Martha Mountains or Chiriqui). Several field guides considered it: rare-local (1000 – 1700/2000m) (Ridgely & Tudor, 2009; Freile & Restall, 2018). Rare to locally fairly common in Bolivia (Herzog et al., 2016) with an endemic subspecies and different altitudinal distribution 300 – 1200. Distribution is patchily. Rare and widespread to 1700m in Peru (Schulenberg et al. 2010). If it is overlooked and until research about the different subspecies and distribution. It might apply to LC. Several records on eBird (but impossible to be certain with all of these).
A minority of this species’ distribution is in Brazil. Nevertheless the Brazilian National Red List assessment may provide relevant information. In Brazil, the species is listed as NT on the basis that declines in this population are estimated to be close to 30%, as a result of habitat loss and (especially) degradation — estimates of the latter being based on the work by Barlow et al. 2016 (Nature 535: 144–147). As with other forest-dependent species, forest degradation may be even more influential on population declines than forest cover loss per se.
The region where the species occurs in Brazil is particularly affected by deforestation, which explains why it ranks worse than the rest of the distribution, LC on the Global Red List and NT on the Brazilian Red List.
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 26 June 2023. 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 26 June 2023, when discussions will re-open.
Comments submitted via this Forum highlighted the fact that habitat loss is varying greatly across the range; this information is included in the species factsheet. Moreover, the rate of population decline has been revised to 1-19% over three generations to reflect the species’ sensitivity to additional habitat degradation.
Based on available information, our preliminary proposal for the 2023 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 2 July 2023, after which the recommended categorisations will be put forward to IUCN.
The final 2023 Red List categories will be published on the BirdLife and IUCN websites in December 2023, 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 we will post a final decision on this species’ Red List status on this page on 10 July 2023.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Grey-throated Leaftosser is recommended to be listed as Least Concern.
Many thanks for everyone who contributed to the 2023.2 GTB Forum process. The final 2023 Red List categories will be published on the BirdLife and IUCN websites in December 2023, following further checking of information relevant to the assessments by both BirdLife and IUCN.
This species have some races/subspecies that could be considered endemic or restricted of certain habitats or ecosystems (E.g., Santa Martha Mountains or Chiriqui). Several field guides considered it: rare-local (1000 – 1700/2000m) (Ridgely & Tudor, 2009; Freile & Restall, 2018). Rare to locally fairly common in Bolivia (Herzog et al., 2016) with an endemic subspecies and different altitudinal distribution 300 – 1200. Distribution is patchily. Rare and widespread to 1700m in Peru (Schulenberg et al. 2010). If it is overlooked and until research about the different subspecies and distribution. It might apply to LC. Several records on eBird (but impossible to be certain with all of these).
A minority of this species’ distribution is in Brazil. Nevertheless the Brazilian National Red List assessment may provide relevant information. In Brazil, the species is listed as NT on the basis that declines in this population are estimated to be close to 30%, as a result of habitat loss and (especially) degradation — estimates of the latter being based on the work by Barlow et al. 2016 (Nature 535: 144–147). As with other forest-dependent species, forest degradation may be even more influential on population declines than forest cover loss per se.
For the Brazilian National Red List file for this species, see: https://doi.org/10.37002/salve.ficha.15357
The region where the species occurs in Brazil is particularly affected by deforestation, which explains why it ranks worse than the rest of the distribution, LC on the Global Red List and NT on the Brazilian Red List.
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 26 June 2023. 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 26 June 2023, when discussions will re-open.
Preliminary proposal
Comments submitted via this Forum highlighted the fact that habitat loss is varying greatly across the range; this information is included in the species factsheet. Moreover, the rate of population decline has been revised to 1-19% over three generations to reflect the species’ sensitivity to additional habitat degradation.
Based on available information, our preliminary proposal for the 2023 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 2 July 2023, after which the recommended categorisations will be put forward to IUCN.
The final 2023 Red List categories will be published on the BirdLife and IUCN websites in December 2023, 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 we will post a final decision on this species’ Red List status on this page on 10 July 2023.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Grey-throated Leaftosser is recommended to be listed as Least Concern.
Many thanks for everyone who contributed to the 2023.2 GTB Forum process. The final 2023 Red List categories will be published on the BirdLife and IUCN websites in December 2023, following further checking of information relevant to the assessments by both BirdLife and IUCN.