Dunn, J.L. Field impressions and other thoughts about Tule Geese (Anser alhifrons elgasi)

Takekawa, J.T. Searching out a Central Valley “bird of mystery:” The Tule Greater White-fronted Goose

Deuel, B. Finding Cackling and Canada Geese in the Central Valley

Sterling, J.C. Central Valley Bird Highlights: August 2004 through November 2004