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(22)

May 25, 1960
Cerro Pichincha

[[underlined]] Diglossa, [[/underlined]] I

[[pink marking]]
We watched the same little black Diglossas this morning as on May 20th.  They seemed to be behaving in essentially the same way as before.  (The [[male symbol]]'s sang a little less, and we saw a little less chasing;  but this may have been due to the fact that this morning was particularly windy.)

I checked the WF's and TF's of this species this morning.  Both are comparatively rare – much rarer than the corresponding movements of many other tanagers & finches (I can't really compare their frequencies with the frequences of the TF's and WF's of the other Diglossas).  The WF's seem to be even rarer than the TF's.  When WF's do occur, however, they can be quite extreme.  The TF's are D-U, sometimes (almost always ?) with a strong lateral component.

The songs of different [[male symbol]]'s may be rather different.  Some songs seem to contain a definite trace of "Zee-zee" doublet structure, almost throughout, while others are much more warbling.  One [[male symbol]] I watched today always began his song phrases with a "real" "Zee-zee" doublet.  This was followed by warbling notes;  and each song phrase usually ended with a fairly distinct "Tsa-wee-yoo".

One [[male symbol]] who had been singing steadily for quite some time, stopped singing completely when a [[female symbol]] came within a couple of feet of him, and then flew straight away from her!  She did not follow.  This incident is another indication that the songs of Diglossa are (at least) not strongly sexual.

Another [[male symbol]] flew toward a [[female symbol]] and uttered R-song as he did so.  Presumably hostile.

Still another [[male symbol]] flew away from us, twice, and uttered R, 
[[/pink marking]]