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Pica nuttalli

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PASSERIFORMES CORVIDAE

Scientific Name: Pica nuttalli
Species Authority: (Audubon, 1837)
Common Name/s:
English Yellow-billed Magpie

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor/s: BirdLife International
Reviewer/s: Symes, A. & Butchart, S.
Contributor/s: Koenig, W.
Facilitator/s: Butchart, S., Ekstrom, J., Sharpe, C J, Derhé, M.
Justification:
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). The population is declining only slowly, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not 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. The long term impact of West Nile virus on the population is being monitored, and if the population is found to be declining more rapidly than currently thought, it will warrant uplisting to a higher threat category.

Geographic Range [top]

Countries:
Native:
United States
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Stable

Habitat and Ecology [top]

Systems: Terrestrial

Threats [top]

Major Threat(s): Yellow-billed magpie numbers in California may be declining due to habitat loss/conversion, rodent poisoning, and West Nile virus (Airola et al. 2007, Crosbie et al. 2008).
Citation: BirdLife International 2012. Pica nuttalli. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 19 April 2014.
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