Behavior, Mimetic Songs and Song Dialects, and Relationships of the Parasitic Indigobirds (Vidua) of Africa.

NP: American Ornithologists' Union, 1973. 1st edition. 4to, blue wrappers, color frontis., 333p, charts. color & bw photos, appendices. Spine faded, else Near Fine+. . Paperback.

Bird songs, Africa,