Richardson 1937 55. Nevada Cowbird (Mothm also antmised) May 29, 1937 opening of 20 mi. G. into Warner Valley, Oregon. Two birds, ♂ + ♀ collected in willow thicket. The ♀ was collected first. The ♂ appeared a few minutes later and on the same dead branch as the ♀. Probably this was a pair of cowbirds tending to support Friedmann's conclusion on pairing in cowbirds. The ♂ was found to have an egg in the duct indicating that active parasitism is going on at what seems to be the start of the breeding period in small birds, eg yellow- throat, of this willow-thicket habitat.