On 1 October 1973 we discovered a Blue-winged x Golden-winged Warbler (Vermivora pinus x V. chrysoptera) in a willow (Salix sp.) patch at the old Eureka Airport, 0.25 mile south of Fairhaven, Humboldt Co., California. We studied the bird from 09:15 to 09:30 and then left for Arcata to contact other local birders. At approximately 10:30 we returned to the willow patch with Bob Behrstock, Dick Erickson, Gary Friedrichsen, Stan Harris, Ron LeValley, Linda Schliesman, Don Schmoldt and Paul Springer. The bird was easily relocated and seen well by everyone present.