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60 Rhamphocelus [[Ramphocelus]], May 1, 1960, III that usually accompanies "Keeyoo" song. I forgot to mention that the rhythm of the "Pssseeet" - "Auh" performance was usually as follows: "Pssseeeet" - "Auh" - pause - "Pssseeeet" - "auh" - pause - "Pssseeeet" - "Auh" - pause...... Another resemblance to the TSN-CHN of the Black-capped Saltator and the "Whit-ch" of the green-backed Sparrow. The "Pssseeeet"s were always higher in pitch than the "Auh"s. These alternate "Pssseeeet"s and "Auh"s were also very reminiscent of, and presumably strictly homologous with, the alternate Tss C and "Auh" CN performances of the Yellow-rumped Tanager described on Apr. 28, 1958, p. 27, and the alternate PCN - "Auh" CN performances of the Yellow-rumped Tanager described on Apr. 29, 1968, p. 30. After male A gave the first series of alternate "Pssseeeet"s and "Auh"s this morning, while the female was feeding, he resumed singing "Keeyoo" song when the female stopped feeding and flew back up to the upper half of the cage. He continued "Keeyoo" songs, alternated with brief flights and/or approaches to the female for quite a while. Then, gradually, he began to sing less frequently. Some times after his "Keeyoo" singing had declined appreciably, he suddenly resumed uttering alternate "Pssseeeet"s and "Auh"s. Just as before, except that he was sitting in a more relaxed, slightly fluffed posture, with the wings slightly drooping so that the red rump was moderately conspicuous. He uttered this series while he was sitting on the same branch as the female,but several feet away from her. He made no attempt to approach the female during this performance, and she appeared to ignore him completely. Still later, the male flew to the side of the cage, and being there for quite some time, uttering another long series of alternate "Pssseeeet"s and "Auh"s. He had to fly away from the female to get to the side of the
