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13 Mixed Diglossini, Sept. 17,1962, VIII. [[left margin]] Albi [[/left margin]] Flew to a nearby branch and sang. Song distinctive "Duh-duh-duh- R". Preliminary notes probably modified "Tuck"s. Then flew farther away and sang some more. Most song phrases "Duh-duh-R." It is obvious that the R-songs of this species are sometimes or always at least partly hostile. [[left margin]] Albi [[/left margin]] Then hear similar songs by what is obviously another ♂ Albi in a similar environment at 8300 ft. [[left margin]] Cy [[/left margin]] Coming back from long and fruitless walk, I hear a [[underlined]] cyanea singing above the "pocket". 5:10 pm. 8060 ft. [[left margin]] Cy [[/left margin]] 5:30. Edge of pocket. See single silent [[underlined]] cyanea in top tree, about 30 ft. off ground. Perhaps probing for insects. [[left margin]] Albi [[/left margin]] 5:47. Hear a presumed ♂ Albi singing in bush very close to me. All songs with preliminary notes. Brief, presumably low intensity, songs. "Tuk tuk taraaaaa." Quality of R quite like that of the Buff-throat heard this morning. Longer song phrases comme ça: "Tuk tuk taraaaaaaaaaaa" [[dash over each 'a']] Basic notes of R quite low pitched, but with high metallic overtones. These may be what gives the "Sreeeeeeeeeee" effect I heard in the songs of adult ♂'s this morning. [[left margin]] Cy [[/left margin]] A few minutes later see a cyanea driving off & chasing another bird, almost certainly another cyanea (or coerulescens), uttering songs as it does so. [[left margin]] Cy [[/left margin]] 6:07. See a single cyanea definitely probing for insects in tops of trees. One tree completely dead.