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24 Rhamphocelus, Apr. 26, 1958, IV distinctive 3-note calls "tuh tuh tsssss", the last note of which is possibly a brief [[phi symbol]]. In posture comme ça: [[image]] belly fluffed. Bill opening & closing with each note. Occasionally alternating with one or two CN's, (whenever a CN was uttered, the wings went back over rump - in a WF? - and a TF was done.) No apparent response. Every CN seems to be accompanied by a TF in all circumstances. And at least usually by a WF too. This evening there were more Tss- Φ performances in the group by the camp. A whole series of calls comme ça: [[image]] The short notes being what I call Tss Notes, the long notes being high thin rattles, the things I described as having a "rattle undertone." So this species does seem to have 2 definite rattles. One the typical tanager R, and the other what I shall call the ΦR. It is possible that the ΦR is really intermediate between Tss and simple R. Something about these Φ series of notes is reminiscent of HAC series in some other species of [[Theauprinae - Embenuinae?]] But it may be more probably that the Φ performances are more strictly homologous with the WhN's of way other species (and the MCN of the Sangre de Toros.) There does mean to be a definite tendency for the "(Φ) complex" sounds, i.e. TssN and ΦR, to be given when one bird joins another. I think the Ф complex patterns must be hostile
Transcription Notes:
[[image: sketch of bird facing right]]
[[image: sketch of series of calls]
Ф phi