Marshall (1942) Ciccaba nigrolineata Lake Olonega for several nights before Jan 29 and at same time each evening (10-11 pm) I would call from high on ridge se camp for 1/2 hr. or more then move into the canyon above spring I call there & ? would also join some performance with gt regularity. Call ~ C. virgata - percussive bark but preceded by 4 barks ascending in pitch thus: hoo, hoo, hoo, hoo, hoo, hoo, hoo, ?A. crescendo towards the 2 main hoots which were exactly like those of C. virgata; in both sp. there give the impression of 2 shots of a remote & muffled shot gun - "both barrels". ? definitely higher than ?. On Jan 29 I went up to the spring when ? started hooting & gave a few calls. Immediately both birds came & flew back & forth between 2 trees perching in each & coming at over my head where I was standing.