LC
Zarudny's Sparrow Passer zarudnyi



Justification

Justification of Red List Category

This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <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, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Population justification
The species is described as not common (Clement et al. 1999), but the global population size has not been quantified directly. Based on density estimates from Turkmenistan (4-7 individuals/km2 in the Repetek Reserve and 0.4 individuals/km2 in central Kara Kun; Atamuradov 1999) and assuming that only 10% of the Extent of Occurrence are occupied, the global population may number 7,000-125,000 mature individuals.

Trend justification
The species is assumed to be undergoing a decline and range contraction (del Hoyo et al. 2019), but the reasons for the decline are unclear. It is now extinct in Iran.

Distribution and population

Passer zarudnyi is restricted to Turkmenistan and Uzbekistan, although it formerly also occurred in eastern Iran. This poorly-known, recently-split species appears to be scarce and patchily distributed within its range.

Ecology

The species is confined to bare, rocky areas with sparse trees and bushes, and appears rare and unpredictable in its movements (del Hoyo et al. 2009).

Acknowledgements

Text account compilers
Hermes, C., Symes, A.

Contributors
Rustamov, A & Schweizer, M.


Recommended citation
BirdLife International (2022) Species factsheet: Passer zarudnyi. Downloaded from http://www.birdlife.org on 10/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 10/08/2022.