Carrizal Seedeater (Amaurospiza carrizalensis): new information requested.

This discussion was first published as part of the 2010 Red List update, but remains open for comment to enable reassessment in 2014.

Link to BirdLife species factsheet for Carrizal Seedeater

Carrizal Seedeater Amaurospiza carrizalensis was only described in 2003, shortly after which habitat at the type locality was destroyed during the development of the Guri Dam, which subsequently flooded this site. Consequently the species was listed as Critically Endangered under criteria C2 and D1 with a suspected global population of fewer than 50 individuals and declining.

However, surveys in late 2007 and 2008 recorded the species in seven areas in the Caroní basin (M. Lentino in litt. 2008). Declines are still suspected because other potentially suitable habitat continues to be destroyed. However, the low number of records may be partly due to the difficulty in surveying its habitat (stands of spiny Guadua latifolia and Ripidocladus spp. bamboo forest), which as a result has rarely been explored.

Further information is requested on how widespread this species is now known to be and what its likely population trends are. If the species has proven to be more common and widespread and its habitat less threatened than was initially feared then it may warrant downlisting to a lower category of threat.

Amaurospiza carrizalensis: se necesita nueva información
Amaurospiza carrizalensis fue descrito en 2003, poco después la localidad tipo fue destruida durante la construcción de la represa Guri, inundando esta localidad. En consecuencia, la especie fue clasificada como En Peligro Crítico bajo los criterios C2 y D1, con una población global calculada en < 50 individuos, que además estaba en declive.

Aunque las búsquedas en 2007 y 2008 registraron esta especie en siete sitios en la cuenca de Caroni (M. Lentino, in litt 2008); se cree que sus poblaciones siguen disminuyendo por la continuada perdida de hábitat potencial. Por otro lado, el bajo número de registros podría deberse en parte a la dificultad que supone trabajar en el hábitat dónde se encuentra la especie (bosque espinoso de bambú: Guadua latifolia y Ripidocladus spp); por lo que rara vez es explorado.

Se necesita más información sobre el área de distribución, tamaño y tendencia poblacional de esta especie. Si la especie es más común, su distribución más extensa, y su hábitat se encuentra menos amenazado de lo pensado originalmente, es posible que deba cambiarse su categoría de amenaza a una menor.

(This discussion was first started as part of the 2010 Red List update)

Related posts:

  1. Archived 2010-2011 topics: Unicoloured Thrush (Turdus haplochrous): new information requested
  2. Archived 2010-2011 topics: Foothill Elaenia (Myiopagis olallai): is there sufficient information to reassess this species?
  3. Archived 2011-2012 topics: Red-bellied Grackle (Hypopyrrhus pyrohypogaster): does this species merit downlisting?
  4. Plain-flanked Rail (Rallus wetmorei): request for information
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2 Responses to Carrizal Seedeater (Amaurospiza carrizalensis): new information requested.

  1. Joe Taylor says:

    Preliminary proposals

    Based on available information, our preliminary proposal for the 2014 Red List is to pend the decision on Carrizal Seedeater Amaurospiza carrizalensis and keep this discussion open until early 2015, while leaving the current Red List category unchanged in the 2014 update.

    There is now a period for further comments until the final deadline of 31 March, after which recommended categorisations will be put forward to IUCN.

    The final Red List categories will be published on the BirdLife and IUCN websites in mid-2014, following further checking of information relevant to the assessments by both BirdLife and IUCN.

  2. Andy Symes says:

    Recommended categorisation to be put forward to IUCN

    Following further review, there has been no change to our preliminary proposal for the 2014 Red List status of this species.

    This discussion will remain open for further comments and information until early 2015, and the current Red List category will remain unchanged in 2014.

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