Three-toed Jacamar (Jacamaralcyon tridactyla): downlist from Vulnerable to Near Threatened?

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 2018 Red List update this post remains open and the date of posting has been updated.

BirdLife species factsheet for Three-toed Jacamar

The Three-toed Jacamar was considered very common in the early and mid-19th century, but is thought to have suffered a very substantial decline in range and population. The species is listed as Vulnerable under Criteria A2c+3c+4c;D1 because the remaining population was considered to be very small (250-999 mature individuals) and fragmented, with habitat loss and degradation continuing to threaten populations, which were thought likely to be declining. The species now occurs chiefly in small numbers at a few sites in the rio Paraíba valley in Rio de Janeiro state, and in the dry regions of east Minas Gerais, south-east Brazil. Recent records from Minas Gerais have widened its known distribution (Machado et al. 1998, T. A. de Melo Júnior in litt. 1998, 1999, Silveira and Nobre 1998, Vasconcelos et al. 1999, Ribon et al. 2002) and suggest that further populations may exist within this area.

In the Brazilian Red List assessment for birds (MMA 2014) this species is listed as Near Threatened.

Up-to-date information is requested on the species’s population size and trend. Confirmation of a population of at least 1,000 mature individuals, a population reduction of less than 30% over three generations (past and/or future) and a continuing decline of less than 10% over three generations would likely qualify the species for downlisting to Near Threatened. Comments on the proposed downlisting are welcome.

 

References:

Machado, A. B. M.; da Fonseca, G. A. B.; Machado, R. B.; Aguiar, L. M. De S.; Lins, L. V. 1998. Livro Vermelho: das espécies ameaçadas de extinça1o da fauna de Minas Gerais. Fundaça1o Biodiversitas, Belo Horizonte.

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.

Silveira, L. F.; Rocha Nobre, H. 1998. New records of Three-toed Jacamar Jacamaralcyon tridactyla in Minas Gerais, Brazil, with some notes on its biology. Cotinga: 47-51.

Vasconcelos, M. F. De; Maldonado-Coelho, M.; Duraes, R. 1999. Notas sobre algumas espécies de aves ameaçadas e pouco conhecidas da porçao Meridional da Cadeia do Espinhaço, Minas Gerais. Melopsittacus: 44-50.

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2 Responses to Three-toed Jacamar (Jacamaralcyon tridactyla): downlist from Vulnerable to Near Threatened?

  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 proposal for the 2017 Red List would be to pend the decision on this species and keep this discussion open until 2018, while leaving the current Red List category unchanged in the 2017 update.

    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.

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