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9

Atlapetes,  Aug 7, 1959, II

"chip chee [[jagged line]]" or "chip cheee Wheeoo" or
"chip Feeo Feeo [[jagged line]]"

All this was quite reminiscent of the SR type songs of the Brown-capped Bush-tanager, and even more reminiscent of the vocal repertory of the Sooty-capped Bush-tanager, insofar as the R element seems to be only loosely connected with the more musical song part

Surprisingly enough, the singing birds all stopped and disappeared by a few minutes after dawn, and I didn't observe any more trace of them during the rest of the morning. 

Atlapetes, I 

Aug 9, 1959
Cerro Pichincha

Watching several small parties of this yellow-bellied species moving through bushy "hedges" near the top of the humid temperate zone here. Very very active and restless. Some, at least, of these small parties were family groups, adults with fully grown young.

The birds were rather silent, except for the fact that they uttered rather weak "Trit" CN's nearly constantly, most of the time, both when actually moving or flying and when perched ready to move.

A couple of times this morning there were sudden outbursts of more elaborate vocalizations in one or more of the parties. I couldn't tell what provoked these outbursts. It is possible that all or most of these elaborate vocalizations were being used as "greeting" when one member of a family caught up with another. These elaborate vocalizations contained most of the same elements as the "ordinary song" described above on Aug. 7, but