This discussion was first published on Dec 2 2010 as part of the 2010-2011 Red List update, but remains open for comment to enable reassessment in 2013. Link to BirdLife species factsheet for Great-billed Seed-finch Great-billed Seed-finch Oryzoborus maximiliani is listed as Near Threatened under criteria A2c,d; A3c,d; A4c,d on the basis that it is suspected to be undergoing a slow to moderately rapid population decline, estimated at 1-19% over 10 years, as suggested by localised declines in abundance and its disappearance from parts of its range, probably owing to trapping for the cagebird trade (Ridgely and Tudor 1989), as well as habitat loss and degradation driven by logging and the expansion of agriculture. This species was described by Restall et al. (2006) as very local and rare throughout its range. Although its population size has apparently not been estimated, given its scarcity the species must have a very small population. It continues to be very scarce in Brazil, with perhaps the only reliable locality being Emas National Park (A. C. De Luca in litt. 2010). These observations have prompted a review of the species’s status. Up-to-date information is requested, in particular the likely total population size, the current population trend over 11 years (estimate of three generations) and the severity of threats. Any evidence pointing towards an overall decline of at least 30% over 11 years would make the species eligible for at least Vulnerable status under the A criterion. Restall, R., Rodner, C. and Lentino, M. (2006) Birds of Northern South America: An Identification Guide. London, UK: Christopher Helm. Ridgely, R. S. and Tudor, G. (1989) The birds of South America. Austin, Texas: University of Texas Press.
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Five most recent topics
- Consultation on a subset of potential taxonomic changes to passerines
- Global IUCN Red List for birds – 2015 changes
- The taxonomic treatment of the Little Shearwater (Puffinus assimilis)/Audubon’s Shearwater (P. lherminieri) complex is being revised, and P. bryani is being recognised as a species: request for information
- Black-bellied Sandgrouse (Pterocles orientalis) – request for information from Central Asia
- Tessmann’s Flycatcher (Muscicapa tessmanni): List as Least Concern?
- 10 stunning portraits of Argentinian birds [PHOTOS] July 28, 2016Today we don't only celebrate 100 years of our Partner Aves Argentinas but also the incredible biodiversity they conserve. This is only the first round! For more stories like this, subscribe to our email list:
- The early days of Aves Argentinas July 28, 2016Today Aves Argentinas turns 100 years old. Where does the organization come from? What was the vision of its founders? And, given the colourful variety of birds living in the country, how did the dull-looking Rufous Hornero become the national emblem of the country? We take a look back in time.
- 100 years of Aves Argentinas July 28, 2016In 1916 the Sociedad Ornitológica del Plata was founded by a small group of visionaries. Today it counts 3,000 members and works on over 1,000 species. Hernan Casañas, CEO of the organization, reflects on a century of conservation work.
- 10 stunning portraits of Argentinian birds [PHOTOS] July 28, 2016