Following information received during the Forum consultation, in July 2022 the distribution range map of Hooded Berryeater has been updated:
Hooded Berryeater (Carpornis cucullata): Revise global status?
Hooded Berryeater (Carpornis cucullata): Revise global status?
Dear colleagues,
Recently (2020-2021, but also using data from my field work with Carpornis in 1997-2001) we (myself and my master thesis student, Antonio Govea) have concluded a detailed study on the breeding biology and ecology of Carpornis cucullata (Hooded Berryeater). Our main findings were that the species has a low clutch size (both parents care for a single nestling) and that it depends exclusively on primary forests with a diverse fruiting tree community.
The species’ distribution is very narrow (narrower than typically shown) and mainly confined to mid-altitude Atlantic Forest. Recent data from Map Biomas and SOS Mata Atlantica have found that deforestation in the Atlantic Forest increased in the last two years, specially in Santa Catarina state, where about one-fifth of the species’ range lies. In most Rio Grande do Sul state, the species occurs in a very fragmented landscape, in which it depends on a few forest remnants with low interconnectivity.
Additionally, climate change may reduce the species’ range / habitat in the northern part of the range, where it occurs above about 1000 m asl. along a narrow belt. It is also important to remind that Hooded Berryeater is one of the most important seed dispersers of the Atlantic Forest, being one of few species capable to consume and disperse tree species with large seeds (Galetti et al. 2013, Vital et al. 2014).
The precise species’ range is considerably narrower than in the Species Range Map. My calculations of Extent of Occurrence give a total area of 125,000 km².
My study with several individuals in southern Brazil revealed home ranges between 5 and 8 hectares (each of which occupied by a breeding pair) within primary Atlantic Forest.
It would be important to update the range map, if possible, with the information provided by Giovanni. Giovanni, would a refined altitudinal range be sufficient to do this?
This species is LC on the Brazilian National Red List, and while it may be locally threatened in some regions, the Serra do Mar population seems relatively secure. The proposed global status seems reasonable, and would come into line with the National assessment.
Hi Ben,
As depicted in the range map, the species appears to occur at the top of Planalto Paulista (São Paulo plateau) and Meridional Planalto (RS and SC states), which is not the case: Carpornis is restricted to the very humid sea-ward slopes of Serra do Mar.
I would also defend a NT status for Hooded Berryeater in the Brazilian red list.
Best,
Giovanni
* Carpornis cucullata *
In the assessment of the risk of extinction of the Brazilian fauna carried out in Jul/2019, the species was categorized as Least Concern (LC).
*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; Fabiane Fileto Dias; Renata Duarte Alquezar de Oliveira.
*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 (197,855 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* – There is no information available on population estimates.
Apparently quite unusual throughout its distribution, possibly due to its inconspicuous behavior (Snow & Sharpe, 2019). North of its range, most suitable lowland habitats have already been destroyed and the species is now almost confined to mountain forests (Uezu et al., 2005). However, relatively large areas of mountain forest remain publicly or privately protected (Kirwan & Green, 2011). In Minas Gerais and São Paulo, when within its habitat, it is considered common.
Although the expansion of agriculture, urbanization, road construction (Snow, 2004) and forest fragmentation (Simões, 2010) are cited as threats to the species, they do not seem to be capable of putting it at risk of extinction in a near future.
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 cucullata is endemic to southeastern and southern Brazil, occurring from Espírito Santo to Rio Grande do Sul. It inhabits mountain forests and humid lowlands, which are threatened by agriculture, urbanization and road construction. However, the species has a wide distribution with large portions of suitable habitat, so threats do not appear to be able to bring it to one of the thresholds of extinction risk in the near future. Therefore, C. cucullata was categorized as Least Concern (LC).
References
BirdLife International, 2019. Species factsheet: Carpornis cucullata. Disponível em: http://www.birdlife.org.
Kirwan, G.M. & Green, G. 2011. Cotingas and Manakins. p.624. Christopher Helm, UK London.
Simões, L.L. 2010. Guia de aves Mata Atlântica paulista: Serra do Mar e Serra de Paranapiacaba. p.132. WWF Brasil.
Snow, D.W., 2004. Family Cotingidae. p.32-110. In:del Hoyo & Elliott. Handbook of the Birds of the World, Lynx
Edicions.
Uezu, A. & Metzger, J.P. Vielliard, J.M.E., 2005. Effects of structural and functional connectivity and patch size on the
abundance of seven Atlantic Forest bird species. Biological Conservation, 123: p.507–519.
The range map needs to be updated, but it is still large (125,000 km² according to Giovanni), so the species should be listed as LC under criterion B.
Furthermore, there is no evidence that population declines exceed 20% over three generations. So, the proposed global status seems right to me and is in line with the national assessment.
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 new information submitted here and on observational records from GBIF.org, the distribution range map has been updated as shown above. Calculated from a minimum convex polygon around the mapped range, the EOO has been revised to 384,000 km2. We would greatly appreciate additional comments on the species’ distribution that could allow us to refine the range map further. The rate of tree cover loss within the revised range remained the same; there is currently no evidence of habitat loss or population declines exceeding 20% over three generations.
Therefore, 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. Hooded Berryeater 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.