The article presents a study that discusses the susceptibility of the Yellow-billed Magpie or Pica nuttali to the West Nile virus (WNV). It states that the California Department of Health Services has reported a 49% decrease in the population of the bird that is endemic to their place and whose carcasses reveal being positive of WNV. The study explains that the WNV affects the existence of magpie and points to the need for the protection and management of their natural habitat, public awareness campaign, and surveillance programs for WNV.