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Tangara, Sep. 21, 1959, II.

[[Red colored =]] = harmonies (sweet tones) [[red horizontal line]] = slurring quality.

The initial part of this song, the "de de de da duh" was fairly constant.  Many song phrases were apparently abbreviated, and consisted of these 5 notes alone.  The remainder of the song, if present, was the variable part.  Many song phrases consisted of the initial 5 notes, followed immediately by the Rattle ?, with nothing more at all.  When other elements were also added, it was obvious that the sequence of Rattle, where, moderately accelerated notes, etc., was essentially "random", i.e.  almost or everyone of these components could be uttered at anytime in any part of the sequence.

I am also certain that the Whine, the "Wheeee" was also uttered by tuff alone, after one or a few of the CN's or CN-like notes.
 
The form of this song seems to be most significant to me.  It is almost exactly intermediate between the song of gyrola and the R pattern of the golden-masked Tanager .  The variability of the components, after the initial notes, would suggest that the prolonged song phrase as a whole (which may well have been like that of gyrola at one time) is in process of "break up" or "dissolution".  And the sequence of R's in the songs would suggest that the R may be taking the place of an original warble.

These songs were uttered from apparently quite ritualized sitting postures.  The head feathers were possibly just slightly ? during some songs, but this was never very much, and quite possibly absent during the majority of song phrases.   During some songs, A made one or two very slight WF movements.

B also began to sing this afternoon, much later than A.  B's song phrases were always much weaker and shorter than the typical phrases uttered by A.  Possibly uttered in response to A's phrases.  The two birds usually or always uttered their phrases autophonally.

I think that most of B's phrases were eventually similar or identical with the initial 5-note parts of A's songs.

B never showed any trace of special ritualized movements or postures during singing.

The CN's uttered by both birds today were eventually the same