Archived 2017 topics: Klages’s Antwren (Myrmotherula klagesi): uplist from NT to VU?

This discussion was first published as part of the 2016 Red List update. At the time a decision regarding its status was pended, but to enable potential reassessment of this species as part of the 2017 Red List update this post remained open and the date of posting was updated.

BirdLife species factsheet for Klages’s Antwren

Klages’s Antwren is found in Roraima, Amazonas and Pará, Brazil. The species is listed as Near Threatened, approaching the criteria for B1ab(iii). It is known from a small range and is restricted to a specialised forest habitat that is under threat from logging and encroachment. However, the range is not yet severely fragmented or restricted to few locations. The population size has not been quantified but it is described as fairly common to common. The species’s population trend is unknown, although it is suspected to be decreasing in line with rates of habitat loss and degradation. The extent of occurrence (EOO) is estimated at 11,800 km2 and the species is estimated to have 11-100 locations.

In the Brazilian Red List assessment for birds (MMA 2014) this species is listed as Vulnerable under A3c. The species is predicted to lose 30-59% of its habitat by 2020 due to agriculture, deforestation and hydroelectric dam construction. Owing to a loss of habitat the species is predicted to undergo a future population decline of >30% in three generations (15.3 years). 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 reduction and predicted future habitat loss. Confirmation that the future population decline is likely to be greater than 30% may qualify the species for VU under criterion A3c. Comments on the proposed uplisting are welcome.
References:

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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2 Responses to Archived 2017 topics: Klages’s Antwren (Myrmotherula klagesi): uplist from NT to VU?

  1. James Westrip (BirdLife) says:

    Based on available information, our proposal for the 2016 Red List would be to pend the decision on this species and keep this discussion open until 2017, while leaving the current Red List category unchanged in the 2016 update.

    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.

  2. Hannah Wheatley (BirdLife) says:

    Preliminary proposals

    Based on available information, our preliminary proposal for the 2017 Red List would be to list Myrmotherula klagesi as VU under criteria A3c + A4ac.

    There is now a period for further comments until the final deadline of 4 August, 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 the initial proposal.

    The final 2017 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.

Comments are closed.