This is part of a consultation on the Red List implications of extensive changes to BirdLife’s taxonomy for non-passerines
Lynx Edicions and BirdLife International will soon publish the HBW-BirdLife Illustrated Checklist of the Birds of the World, building off the Handbook of the Birds of the World series, and BirdLife’s annually updated taxonomic checklist.
The new Checklist will be based on the application of criteria for recognising species limits described by Tobias et al. (2010). Full details of the specific scores and the basis of these for each new taxonomic revision will be provided in the Checklist.
Following publication, an open and transparent mechanism will be established to allow people to comment on the taxonomic revisions or suggest new ones, and provide new information of relevance in order to inform regular updates. We are also actively seeking input via a discussion topic here regarding some potential taxonomic revisions that currently lack sufficient information.
The new Checklist will form the taxonomic basis of BirdLife’s assessments of the status of the world’s birds for the IUCN Red List. The taxonomic changes that will appear in volume 1 of the checklist (for non-passerines) will begin to be incorporated into the 2014 Red List update, with the remainder, and those for passerines (which will appear in volume 2 of the checklist), to be incorporated into subsequent Red List updates.
Preliminary Red List assessments have been carried out for the newly split or lumped taxa. We are now requesting comments and feedback on these preliminary assessments.
Crestless Fireback Lophura erythopthalma is being split into L. erythopthalma and L. pyronota, following the application of criteria set out by Tobias et al. (2010).
Prior to this taxonomic change, L. erythopthalma (BirdLife species factsheet) was listed as Vulnerable under criteria A2c,d+A3c,d+A4c,d, on the basis that it was suspected to be undergoing a rapid population decline (30-49% over three generations [c.15 years]), owing to on-going habitat loss and degradation, and hunting pressure.
L. erythrophthalma (as defined following the taxonomic change) occurs in Peninsular Malaysia and Sumatra, where it appears to rely heavily on lowland primary forest, although it has been recorded in secondary forest in Malaysia (del Hoyo et al. 1994, Madge and McGowan 2002). It may qualify as Vulnerable under criteria A2cd+3cd+4cd, on the basis that it could be in rapid population decline (30-49% over three generations [c.15 years]) owing to on-going habitat loss and degradation, and hunting pressure.
L. pyronota is endemic to Borneo, where it appears to be restricted to lowland primary forest (del Hoyo et al. 1994, Madge and McGowan 2002). It may qualify as Vulnerable under criteria A2cd+3cd+4cd; C2a(ii), on the basis that it is likely to have a small population (fewer than 10,000 mature individuals), probably forming a single subpopulation, which could be in rapid decline (30-49% over three generations [c.15 years]) owing to on-going habitat loss and degradation, and hunting pressure.
Comments on these suggested categories are invited and further information would be welcomed.
del Hoyo, J., Elliott, A. and Sargatal, J. (1994) Handbook of the birds of the world, Vol 2: New World Vultures to Guineafowl. Barcelona, Spain: Lynx Edicions.
Madge, S. and McGowan, P. (2002) Pheasants, partridges and grouse: including buttonquails, sandgrouse and allies. London: Christopher Helm (Helm Identification Guide).
Tobias, J. A., Seddon, N., Spottiswoode, C. N., Pilgrim, J. D., Fishpool, L. D. C. and Collar, N. J. (2010) Quantitative criteria for species delimitation. Ibis 152: 724–746.