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[[underline]] Saltator, [[/underline]] I.
[[circled]] 23 [[/circled]]
December 30, 1958
Frijoles

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Watching a pair of Streaked Saltators here. One bird flying about from tree to tree. Each time it came in to land, it uttered a series of notes. These are obviously what I have been calling "Chuck" Notes earlier (e.g. Apr. 17, p.12) , or, at least, closely related to them; but I noticed today that they are rather "hoarse." They sound, in fact, very much like the GHAC of the Gray Saltators. The notes of the Streaked, however, seem to be somewhat sharper-sounding; and with somewhat longer pauses between notes. The notes of this Streaked Saltator this morning seemed to be exactly intermediate, in form, between the GHAC of the Gray Saltators at Iquitos and the usual "landing CN's" of the [[underline]] Thraupis [[/underline]] tangers!!! (This would suggest that the "GHAC" is more closely related, phylogenetically, to the CN's of tanagers than to the HAC + HScr patterns of tanagers.) The bird today gave its "Chuck" GHAC Note (which I shall call just GHAC from now on) both when it landed near another bird which I presumed was its mate and when it landed some distance away, (although the other was always present, I think, in the general area- say within 20 or 30 ft.) It is possible that the mate responded by giving GHAC in return, when the first bird landed near it; but I am not sure about this.
 The only others sounds uttered by these 2  birds were a few single "Tsit" CN's, quite like those of the Gray Saltators at Iquitos, although probably less metallic. I saw no reason to believe