Archived 2016 topics: Orange-bellied Antwren (Terenura sicki): uplist from Endangered to Critically Endangered?

BirdLife species factsheet for Orange-bellied Antwren

Orange-bellied Antwren is endemic to north-east Brazil. It has been recorded in eight localities from the south-east escarpment of the Borborema plateau in Alagoas, north along this coastal range to Pernambuco. The species is listed as Endangered under B1ab(i,ii,iii,v);C2a(i). The species is known from a very small area (its Extent of Occurrence [EOO] was previously estimated at 130 km2 but has been revised to 12,800 km2  based on new method of calculation), within which it is severely fragmented. The population is estimated to number 250-999 mature individuals. A rapid and on-going population decline is suspected, owing to rates of habitat loss.

In the Brazilian Red List assessment for birds (MMA 2014) this species is listed as Critically Endangered under C2a(i). The population size is inferred to be <250 mature individuals with <50 mature individuals in each subpopulation. The population is in continuing decline owing to habitat loss. The species’s assessment on the Brazilian Red List can be accessed here.

Up-to-date information is requested on the species’s population size and subpopulation structure. Confirmation that the population is <250 mature individuals with <50 mature individuals in each subpopulation and that the population is in continuing decline would likely qualify the species for Critically Endangered under criterion C2a(i). Comments on the proposed uplisting are welcome.



MMA (2014) Lista Nacional Oficial de Espécies da Fauna Ameaçadas de Extinção. Portaria No 444, de 17 de dezembro de 2014. Diário Oficial da União – Seção 1. Nº 245, quinta-feira, 18 de dezembro de 2014.


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3 Responses to Archived 2016 topics: Orange-bellied Antwren (Terenura sicki): uplist from Endangered to Critically Endangered?

  1. Diego Mendes says:

    Pereira, G. A., Sidnei de M.D., Luís F.S., Sônia A.R., Ciro A., Frederico A.S., Sergio L.M.C.P., Gustavo B.M. & Alexander C.L. 2014. Status of the globally threatened forest
    birds of northeast Brazil. Papéis Avulsos de Ornitologia. Volume 54(14):177‑194.

    “Roda et al. (2011) reported this PCE endemic in 14 forest fragments in upland forest (between 300 and 700 m asl) in the states of Pernambuco and Alagoas. Albano (2009) also reported this species in lowland forest (c. 80 m asl) at Usina Trapiche. We add two new localities in Pernambuco (Table 2, Fig. 7). This species is typically seen accompanying mixed-species flocks: at the Parque Natural Municipal Mucuri-Himalaya
    it was observed foraging with Veniliornis sp., Sittasomus griseicapillus, Herpsilochmus atricapillus, Phylloscartes ceciliae, Basileuterus culicivorus and Lanio cristatus, and at the Engenho Brejão was observed in a mixed species flock including Myrmotherula axillaris, Herpsilochmus atricapillus and Phylloscartes ceciliae. This species is still recorded with some frequency at the Mata do Estado and Engenho Água Azul (GAP),
    and six territories were located at the 630 ha RPPN Frei Caneca in November 2012 (ACL: WA#814109, XC#113530; November/2012). It has apparently declined to a handful of pairs (perhaps now a single pair) at the ESEC Murici, Alagoas (Albano 2009,
    A. Whittaker pers. comm.). The causes of this nearextinction at the latter site are unknown, but given that the ESEC Murici is the largest remaining forest patchin the PCE this is a very worrying trend, and we consider that this species now qualifies for Critically
    Endangered status based on a total population now estimated at fewer than 250 mature individuals in a few disparate forest fragments.”

  2. Bennett Hennessey says:

    Orange-bellied Antwren (Terenura sicki)

    This is a species remaining in small forest fragments of North-eastern Atlantic Forest. Many of these fragments are drying and losing species richness- to the point the smaller fragments will not be able to hold this species for the long-term.

    WikiAves evidence
    Only 5 sites have recent evidence of the Antwren on WikiAves in two states in Brazil.
    Pernambuco state: Jaqueira (Serra do Urubu)(9 photos- last in 2015); Lagoa dos Gatos (serra do Urubu) (7 photos last 2014, 4 sound recordings- last 2014); Sao Vicente Ferrer (1 photo and 2 sound recordings in 2014, two sound recordings in 2009); Sirinhaem (one sound recording in 2009)
    Alagoas state: Murici (two photos from 2014, older sound vocalizations); Quebrangulo (only one sound recording from 2008)

    eBird records

    Only have recent observation as Murici and Serra do Urubu. The only other site for the species in eBird is Parque Estadual da Pedra Talhada- with the last record in 2002.

    Though I am not familiar with abundance studies, I have heard many people comment that the species is less common now in Murici.

  3. James Westrip (BirdLife) says:

    Based on available information, our preliminary proposal for the 2016 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 of 28 October, after which the recommended categorisations will be put forward to IUCN.

    Please note that we will then only post final recommended categorisations on forum discussions where these differ from those in the initial proposal.

    The final 2016 Red List categories will be published on the BirdLife and IUCN websites in early December, following further checking of information relevant to the assessments by both BirdLife and IUCN.

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