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27

Ramphocelus, Apr. 28, 1958, II               

to "call in" a mate or another member of the flock.

Some of these TssC's were also more or less irregularly alternated with CN's. It is obvious that the association of TssC notes, ΦR notes, and CN's,although very frequent,is very variable and not ritualized as such.

It looks rather as if the CN's were usually lower intensity and/or contain a stronger escape component than the other calls; while the TssC notes seem to be usually lower-intensity and/or contain a stronger escape component than the ΦR

[[image - diagram]]

??

Repertory of adult or nearly adult males.

But this doesn't explain the apparent use of TssC (and CN's?) to "call in" other birds.

I must add, just to keep the record clear, that some of the CN's of this species do seem to be used by one bird to "keep in touch" with another. Like the Sangre de Toros (particularly the ones observed at K-6).

I am now fairly certain that these adult or sub-adult males of this species do not  usually utter R's like those of my captive bird. Nor do they utter PCN's