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Atlapetes, Apr. 14, 1961, II.

or less in the same way as earlier this morning, and in the same way I have heard other chestnut-cappeds sing on previous years. Lots of thin high "Zeeeeeeeee" Notes, and also lots of shorter "duh" or "ta" notes. Somewhat variable in arrangement. No appreciable rattle undertone. Then the bird came closer to me, continuing to sing all the while. When it was quite closer to me, its songs became "Trit trit tsaaaaaaaassh," frequently repeated. With a definite rattle undertone. This would certainly confirm my impression that the rattle undertone is essentially hostile.

I think that all the "songs" of this species might be interpreted as combinations of CN's and SN's, with R's in some cases.

Atlapetes, I.
April 15, 1961
Cerro Punta

Watching birds in the area halfway between the upper pasture and Cerro Punta again this morning.

I arrived rather early (ca. 6:15 a.m.), and found, much to my surprise, that the Yellow-throated Atlapetes has a "dawn song" very much like the "Keeyoo" song of the Sangre de Toro, the "Whew" Song of the Buff-throated Saltator, and the "Kew" Song of the streaked Saltator.

I either heard 2 different Yellow-throats uttering "dawn song" or (less probably) the same bird uttering "dawn song" in 2 different places, quite far apart from one another. In any case, I heard 2 long bursts of this "dawn song." I did not see the bird uttering the joint burst, but I caught a few glimpses of the bird uttering the second burst.

Both bursts were uttered by bird(s) perched fairly high (5-10

Transcription Notes:
Left margin: 3 straight and 1 hatched vertical lines down the page "Trit trit tsaaaaaaaassh" might be [[squiggly underline]] "Tut tut tsaaaaaaauh" [[/squiggly underline]]