WNV is more common in the suburbs where breeding sites are a plenty and the WNV super-spreader American Robin is also abundant.
I suspect WNV did in this young robin below and I wish I had the lab material to detect it. Bird was healthy - at least the muscle was not receding from the sternum/keel.
UPDATE 8/3/2015 State released its weekly WNV report with 61 mosquitoes being positive. That's far more than I've seen... ever