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[[underline]] Saltator, [[/underline]] July 1, 1959, II.
[[circled]] 26 [[/circled]]

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bird had started the WS, and then continued the Wbl a few seconds after the other bird had stopped the WS. The ratio of Wbl's to WS's was obviously 1 to 1 in such circumstances- 1 Wbl answering a single WS
I also watched the same pair of Black-capsar yesterday. Behaving in much the same way as yesterday. Lots + lots of CN-like notes whenever disturbed by me (but usually quite silent otherwise). I think I shall have to give the different types of these notes different names. I shall call the harsh "Chank"-like notes "CHN"; and the high pitched "Tsit" note TSN. I think that the particularly bell-like, Blue-black Grosbeak-like notes may be nothing more than variants of the TSN. It is my impression that both birds occasionally gave all types of these notes; but certainly for a long time one bird consistently gave CHN's while the other consistently gave TSN's. Possibly a sexual difference???
I wonder if this two type of "CN" arrangement is homologous or analogous with the similar division of CN's in [[underline]] Rhamphocelus [[correct spelling, Rhamphocelus]] [[/underline]] tanagers?
Both birds also gave a lot of GHAC today. Again much as yesterday. But I noticed that a bird often uttered GHAC when it landed by itself, at least several feet from its mate, as well as when landing just beside the mate. I.E. the GHAC of this species is uttered in very much the same way as that of the Streaked (see Dec. 30, 1958, p.23). There is undoubtedly considerable variation in the GHAC's of the Black caps. One bird today uttered quite a lot of GHAC's, quite close together, which might be transcribed as "Tsit tsit tchantchantchantchanh" 
[[two far spaced lines followed by a series of four, close, descending lines]]
This appeared to be eventually composed of 2 TSN's followed by an accelerated series of 4 CHN's. The bird uttered these when it was sitting more