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[[underlined]] Conirostrum, [[/underlined]] May 25, 1960, II.

The TF's of this species are not very extreme.  They are usually or always V-D.  WF's seem to be rarer than TF's;  but they do occur.


[[underlined]] Conirostrum, [[/underlined]] I.
May 26, 1960
Cerro Atacaso

We watched more Cone-bills here, in the same area where I have watched many other species (much higher than Iñaquito, or anywhere we have worked on Pichincha).  At first, I thought these birds might belong to a second species (they seemed to have less caramel color below than the birds we have watched at Iñaquito and on Pichincha);  but they were eventually found to be [[underlined]] fraseri [[/underlined]] also (see notes of July 23, 1960).

These Atacaso birds uttered Cn's in the same situations, with much the same frequencies, as the birds at Iñaquito & Pichincha;  but their CN's did appear to be louder and harsher-sounding.  A single one of their CN's might be transcribed by something like "Dzlut".

We also heard a number of songs this morning.

One bird, feeding near its mate, uttered brief "Ta ta Swee"s.  These may have been abbreviated song phrases.  They may have been provoked by our approach.

Somewhat later, one bird (perhaps the same individual), apparently feeding some distance from its mate, uttered several longer song phrases.  Each of these phrases might be transcribed by something like "Ta Ta Tasweeyoo"  These phrases were uttered from apparently quite unritualized feeding postures.

Still later, one bird flew to join another bird, apparently its mate (either one of these birds might have been the bird's) which sang