Reimsen, J.V. 1974 Tricolored Blackbird Agelaius tricolor Feb. 9 Eastern Contra Costa Co, Calif : 30 Marsh + Kellogg Creeks, Contra Costa Co, Calif : 5 Feb. 17 Corcoran Lake, Kings Co, Calif : 50,000 - a pure guess at the numbers roosting just on the SW corner of the lake in the bamboo hedge . There was no reason to believe that they did not continue just as densely all the way around 2 of the four sides of the reservoir which were lined with bamboo. Apr. 25 Pena Adobe Lagoon, Vacaville, Solano Co, Calif : 100+ in reed beds - undoubtedly a breeding colony May 26 Furnace Creek Ranch, Death Valley N.M., Inyo Co, Calif : 18 with clean white epaulet borders seen by 30+ observers - perhaps only 2nd Inyo Co. record.