A Western Tanager from Murchie Mine Rd was reported last week to be Nevada County's second known avian West Nile case for 2007; the first bird, a Black-headed Grosbeak, was reported earlier this month from the same area (Red Dog Rd, above Nevada City).
The virus may be much more prevalent by now, since the West Nile test results typically don't come back until about 3 weeks after the animal is collected.
(The Tanager was collected July 12, and the Grosbeak June 25.)
(Sources: Peggy Zariello of Nevada County Environmental Health, this page on West Nile virus activity by county in CA, this county webpage)
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