Wednesday, April 23, 2014
YOLO COUNTY NEWS
99 CENTS
Vernard Lewis, an entomologist at the UC Berkeley Cooperative Extension field station in Richmond, points out a wasp nest. Michael Macor/San Francisco Chronicle photo
Western yellowjackets enter a nest found on the grounds of the UC Berkeley Field Station in Richmond on Thursday at the base of a eucalyptus tree. Michael Macor/San Francisco Chronicle photo