NY: Viking. (1968). lst Ed. Sm.4to. 66 p. Yellow illus. cloth. HURD, Clement, b/w illus. with green accents. Bookplate frt. endpp, else near Fine in near Fine d/j. 
Account of mating and nesting habits of the great blue heron, based on observations made over a three-year period at the famous Audubon Canyon Ranch rookery on Bolinas Lagoon in Marin County, California.