| pathology associated with west nile virus infections in the yellow-billed magpie (pica nuttalli): a california endemic bird. | yellow-billed magpies (pica nuttalli, corvidae) are found exclusively in central california and have experienced alarming west nile virus (wnv)-associated mortality since 2004. the first reported case of wnv in the species was reported in july 2004. subsequently, 81% (304/374) of dead magpies submitted that year to the california department of health services dead bird surveillance program were wnv positive by polymerase chain reaction (pcr) test. we studied 43 magpie carcasses collected in 2004 ... | 2010 | 20688633 |