7 thoughts on “Black-headed Berryeater (Carpornis melanocephala): Revise global status?”
*Carpornis melanocephala*
In the assessment of the risk of extinction of the Brazilian fauna carried out in Jul/2019, the species was categorized as Near Threatened (NT). C2a(i)
*Evaluators:* Luís Fábio Silveira; Caio Graco Machado Santos; Ciro Ginez Albano; Diego Mendes Lima; Glayson Ariel Bencke; Jose Fernando Pacheco; Victor de Queiroz Piacentini; Wagner Nogueira Alves.
*Criterion A* – In the assessment carried out in 2019, we did not find long-term data from population estimates to track the decline by observed data (a) and the decline of AOO and EOO (c) do not reach the thresholds for a threat category. Habitat loss calculations using MapBioma do not reach quantitative thresholds for three generations of the species. The taxon’s generational time is 4.6 years (BirdLife International, 2019).
*Criterion B* – The EOO calculations (406,931 km2) do not meet the thresholds for categorizing threatened. Its AOO (greater than 2,000 km2) does not meet the quantitative thresholds for categorizing threatened.
*Criterion C*
The total population is likely to be small and severely fragmented; the trend appears to be downward (Snow, 2004); it may be locally common due to the tendency of individuals to aggregate in certain areas (Silveira, 2008). Populations are restricted or isolated in a series of private reserves or conservation units. It is likely that it became extinct in the following locations: Pitanga, Cajazeiras, Itabuna and Cachoeira Grande, in Bahia; Itaúnas river, Juparanã lake, Colatina, Ibiraçu, Santa Cruz and Santa Leopoldina, in Espírito Santo; Nova Friburgo, in Rio de Janeiro; top of the Paranapiacaba mountain range, in São Paulo (Silveira, 2008).
The species is on the brink of extinction in the Pernambuco Endemism Center, it is uncommon in southern Bahia, northeastern Minas Gerais and northern Espírito Santo, and in Rio de Janeiro it is currently rare (W. N. Alves, J. F. Pacheco, V. Q. Piacentini, com. pers., 2019). Taking as a basis that the subpopulation of the Paranapiacaba Massif represents the majority of the population and does not exceed 770 individuals/km² (Aleixo & Galetti, 1997) and considering that the Serra de Paranapiacaba-SP forest massif is the largest forest remnant for the species it is inferred that the other locations together will not exceed 10,000 mature individuals, but at least one subpopulation has more than 1,000 individuals. Considering also that its total population is small and severely fragmented, a trend of population decline can be inferred.
*Criterion D* – There is no information available on population estimates.
*Criterion E* – in the evaluation carried out in 2019, we did not find PVA data.
JUSTIFICATION: Carpornis melanocephala is endemic to a narrow strip of the Atlantic Forest that extended from Alagoas to Paraná. It is currently on the verge of extinction in the Pernambuco Endemism Center and is uncommon in southern Bahia, northeastern Minas Gerais and northern Espírito Santo. In Rio de Janeiro it is currently rare. The total population does not exceed 10,000 mature individuals, but at least one subpopulation has more than 1,000 individuals. In addition, there is continued population decline due to loss of habitat quality and occupancy area. With all this, the species is approaching the threshold for categorization as Vulnerable (VU), according to the C2a(i) criterion. None of the other sub-criteria were met. Therefore, C. melanocephala was categorized as Near Threatened (NT).
References
BirdLife International, 2019. Species factsheet: Carpornis melanocephala. Disponível em: http://www.birdlife.org.
Snow, D.W., 2004. Family Cotingidae. p.32-110. In:del Hoyo & Elliott. Handbook of the Birds of the World, Lynx
Edicions.
Silveira, L.F., 2008. Carpornis melanocephalus (Wied, 1820). p.510–511. In:Machado & Drummond. Livro Vermelho da
Fauna Brasileira Ameaçada de Extinção, Ministério do Meio Ambiente e Fundação Biodiversitas.
The proposed change to NT seems reasonable, and would bring national and global status into synchrony.
The species is in a bad state in some parts of its range (notably the Pernambuco Centre of Endemism in NE Brazil, where the species is restricted to a small population at a single site, Murici) but overall NT seems 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.
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. Black-headed Berryeater is recommended to be listed as Near Threatened, approaching the threshold for listing as threatened under Criteria C1+2a(i).
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.
*Carpornis melanocephala*
In the assessment of the risk of extinction of the Brazilian fauna carried out in Jul/2019, the species was categorized as Near Threatened (NT). C2a(i)
*Evaluators:* Luís Fábio Silveira; Caio Graco Machado Santos; Ciro Ginez Albano; Diego Mendes Lima; Glayson Ariel Bencke; Jose Fernando Pacheco; Victor de Queiroz Piacentini; Wagner Nogueira Alves.
*Criterion A* – In the assessment carried out in 2019, we did not find long-term data from population estimates to track the decline by observed data (a) and the decline of AOO and EOO (c) do not reach the thresholds for a threat category. Habitat loss calculations using MapBioma do not reach quantitative thresholds for three generations of the species. The taxon’s generational time is 4.6 years (BirdLife International, 2019).
*Criterion B* – The EOO calculations (406,931 km2) do not meet the thresholds for categorizing threatened. Its AOO (greater than 2,000 km2) does not meet the quantitative thresholds for categorizing threatened.
*Criterion C*
The total population is likely to be small and severely fragmented; the trend appears to be downward (Snow, 2004); it may be locally common due to the tendency of individuals to aggregate in certain areas (Silveira, 2008). Populations are restricted or isolated in a series of private reserves or conservation units. It is likely that it became extinct in the following locations: Pitanga, Cajazeiras, Itabuna and Cachoeira Grande, in Bahia; Itaúnas river, Juparanã lake, Colatina, Ibiraçu, Santa Cruz and Santa Leopoldina, in Espírito Santo; Nova Friburgo, in Rio de Janeiro; top of the Paranapiacaba mountain range, in São Paulo (Silveira, 2008).
The species is on the brink of extinction in the Pernambuco Endemism Center, it is uncommon in southern Bahia, northeastern Minas Gerais and northern Espírito Santo, and in Rio de Janeiro it is currently rare (W. N. Alves, J. F. Pacheco, V. Q. Piacentini, com. pers., 2019). Taking as a basis that the subpopulation of the Paranapiacaba Massif represents the majority of the population and does not exceed 770 individuals/km² (Aleixo & Galetti, 1997) and considering that the Serra de Paranapiacaba-SP forest massif is the largest forest remnant for the species it is inferred that the other locations together will not exceed 10,000 mature individuals, but at least one subpopulation has more than 1,000 individuals. Considering also that its total population is small and severely fragmented, a trend of population decline can be inferred.
*Criterion D* – There is no information available on population estimates.
*Criterion E* – in the evaluation carried out in 2019, we did not find PVA data.
JUSTIFICATION: Carpornis melanocephala is endemic to a narrow strip of the Atlantic Forest that extended from Alagoas to Paraná. It is currently on the verge of extinction in the Pernambuco Endemism Center and is uncommon in southern Bahia, northeastern Minas Gerais and northern Espírito Santo. In Rio de Janeiro it is currently rare. The total population does not exceed 10,000 mature individuals, but at least one subpopulation has more than 1,000 individuals. In addition, there is continued population decline due to loss of habitat quality and occupancy area. With all this, the species is approaching the threshold for categorization as Vulnerable (VU), according to the C2a(i) criterion. None of the other sub-criteria were met. Therefore, C. melanocephala was categorized as Near Threatened (NT).
References
BirdLife International, 2019. Species factsheet: Carpornis melanocephala. Disponível em: http://www.birdlife.org.
Snow, D.W., 2004. Family Cotingidae. p.32-110. In:del Hoyo & Elliott. Handbook of the Birds of the World, Lynx
Edicions.
Silveira, L.F., 2008. Carpornis melanocephalus (Wied, 1820). p.510–511. In:Machado & Drummond. Livro Vermelho da
Fauna Brasileira Ameaçada de Extinção, Ministério do Meio Ambiente e Fundação Biodiversitas.
The proposed change to NT seems reasonable, and would bring national and global status into synchrony.
The species is in a bad state in some parts of its range (notably the Pernambuco Centre of Endemism in NE Brazil, where the species is restricted to a small population at a single site, Murici) but overall NT seems appropriate.
I agree, NT seems correct.
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.
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. Black-headed Berryeater is recommended to be listed as Near Threatened, approaching the threshold for listing as threatened under Criteria C1+2a(i).
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.