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[[underline]] Saltator, [[/underline]] July 1, 1959, III
[[circled]] 27 [[/circled]]
[[green pencil marks in margin]]
or less apart (several feet away) from its mate. The whole performance looked very much like "song".
Once when one bird landed close beside the other, the latter briefly assumed a posture which may have been a weak nit. mov. of ft. Quite silent.
[[underline]] Saltator, [[/underline]] I July 7, 1959
Frijoles
I found a pair of Black-caps here too, with a nest, with at least one young (probably half grown, as far as I could tell from a distance) in it. In general the birds behaved much like the birds I have seen at the Rio Piedras. Lots of TSN's CHN's, and GHAC's.
When I came particularly close to the nest, the only parent that was around at the time uttered lots of single CHN's, and very few TSN. Might suggest that the CHN's are relatively high intensity.
One bird was heard to utter double notes, 1 CHN - 1 TSN, comme ca. __ --  __ --  __ -- When I wasn't very close to the nest. So it is definite that these 2 types of "CN" are not strictly segregated according to sex. I also wonder if these double notes are related to the double notes in the WS's of the Streaked + Buff-throated Saltators, and some of the introductory notes to the songs of the Green-backed Sparrow.
One of the Black-throats sat alone in a tree for several seconds, when I was far away from the nest; and uttered at least 3 bursts of "GHAC". Sounded quite like the  GHAC's I have heard before. The bird just sat still while it uttered these phrases. Such facts might suggest