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Mixed Diglossini, Feb. 9, 1964, IV [[circled]] 5 [[/circled]] [[margin]] Brun [[/margin]] Then a single Brun flies up into same tree as thrush. Lands on perch 5 ft away Sings briefly. Then flies away again. CORRECTION: In bright sunlight, thrush is quite grayish on breast. Also quite light. [[margin]] Brun [[/margin]] 7:02 See a single Brun chasing a hummingbird. Silent. Couldn't identify the hummer. See another single red-breasted black bird. This species seems to be in breeding condition here. I have seen at least 2 individuals perform song flights. Sun shining brightly now 8:17 [[margin]] Brun [[/margin]] See another single Brun alone. In dense scrub. Then flies up to Eucalypt. 9:00 am. See another red breast alone. There is also a flock of Anis around here. Groove-bells? Unfortunately, the sun is so hot that everything is staying under cover [[margin]] Bari CC Gen [[/margin]] Arrive back in area where Bari, Brun & CC were seen earlier this morning 10:30 am. Hear what seem to be both Bari and CC singing. At first there is nearly or complete overlap. Bari starting R a second after CC begins phrase. Then the two birds gradually change to alternating with little or no overlap. (Unfortunately I could not see either of the birds. I am fairly certain, however, that this identification is correct. If so, it may be more evidence that [[underlined]] carbonaria [[/underlined]] s.l. must sing frequently if the inter-specific inhibition of song is to be maintained correctly) [[margin]] CC [[/margin]] NOTE: I caught only one brief glimpse of a CC in good light this morning. Its breast seemed to be pale dull caramel in color, I.E. like that of the CC's high on Atacaso. If I can confirm this by further indentifications, it would suggest that [[underlined]] fraseri [[/underlined]] and [[underlined]] c. cinereum [[/underlined]] are [[underlined]] not [[/underlined]]