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11

Ramphocelus, Mar. 7, 1958, II                

number of times today when a wild female Sangre de Toro has flown by or around the cage.  Lots of rushing back and forth by both captive birds, with lots of MCN-WhN's. And the male has also  uttered a lot of single hoarse "Treet"or "Wheet" Notes. Bill opening & closing with each note. The quality of these sounds is quite distinct from that of the ordinary CN's of the species. But I can't determine what the functions or motivation of these "Wheet"s might be. They might be almost anything. The captive female has also given rather similar notes in the same circumstances which may be more or less related. But much softer and rather clearer than the "Wheet"s of the male. Sound much like the ordinary CN's of many ordinary paueruies. Again bill opening & closing with each note.


Ramphocelus, I            

March 8, 1958
Barro Colorado                 

I caught a female Yellow-rumped Tanager = iterouotes [[best guess]] = in the net this morning. Banded orange left.
 
She gave a lot of H for Notes when handled in the net just like the Sangre de Toros.

She also give TF and WF's like the Sangre de Toros, but she is a relatively bigger headed, shorter-tailed bird, and her TF's seem to be less extreme.

Late this evening the female Yellow-rump has begun to fly about and utter a few CN's. Generally similar to those of the Sangre de Toros, but sharper, louder, usually shorter and somewhat less nasal.