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(10)

Atlapetes,
Aug. 9, 1959, II.

somewhat differently arranged, with some additions. The typical form of these elaborate "greeting vocalizations" (as I shall call them for the time being, although I don't actually know what their function was) might be represented as follows:  "Tuk tuk tuk tuk tuk tuk [[image - jagged line]] wheeeooo wheeeooo wheeeooo wheeeooo wheeeooo."

Later I heard a bird apparently singing by itself. It gave some phrases just like those described on Aug. 7, also some phrases just like the "greeting vocalizations" described immediately above, and also a great number of pure Rattles by themselves alone!!


Atlapetes, I.

March 20, 1960
Cerro Punta

Have been watching Yellow-throated Bush-finches here, in the usual places. Behaving much as in previous years. Skulking and silent.

Watching one pair particularly closely, around 7000 feet. Call this pair A. Moving about in the shrubbery. But comparatively tame, and so occasionally coming to the tops of bushes. Every once in a while, one bird would be left alone on a top of a bush when its mate left it behind. Such a bird tended to sit there for at least a few seconds, looking more or less alert (occasionally adopting a preflight posture, with Thf, like the one drawn on p. 4.), doing occas- TF's (with very little WF, as usual), and uttering a lot of single CN's! These CN's are thin, and apparently soft, but quite remarkably penetrating. I would now transcribe them as "Tsit" (rather than "Tuck" as on p. 1.). One bird, probably the [[female symbol]], when left 

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