This discussion was first published on Dec 1 2010 as part of the 2011 Red List update.
Initial deadline for comments: 31 January 2012.
Asian Desert Sparrow Passer zarudnyi has been split from Desert Sparrow P. simplex following Kirwan et al. (2009).
P. zarudnyi is considered rare in its range and there is anecdotal evidence of declines in the population and range, at least since the 1980s (Kirwan et al. 2009). It has a large range, with an Extent of Occurrence estimated at 204,000 km2, which does not approach the thresholds for Vulnerable under the range size criterion (EOO of less than 20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, there is no evidence to suggest that the decline is sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (at least a 30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (fewer than 10,000 mature individuals with a continuing decline estimated to be at least 10% in ten years or three generations, or with a specified population structure). It is acknowledged, however, that data are lacking on this species’s distribution and population size, and little is known about potential threats. In addition, data are required on the species’s population trend, which is difficult to judge owing to its apparently nomadic movements and the possibility that the species has always been rare (Kirwan et al. 2009). Further information on the species would be welcomed.
BirdLife range map for Asian Desert Sparrow
Kirwan, G. M., Schweizer, M., Ayé, R. and Grieve, A. (2009) Taxonomy, identification and status of Desert Sparrows. Dutch Birding 31: 139-158.
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