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Mixed Diglossini, May 23, 1966, VII [[circled]] 70 [[/circled]] 50ft away. [[margin]] Bari Scan [[/margin]] [[male symbol]] Bari finally shuts up, flies away. Scans continue NODWAH. Leaving 10:48am. [[margin]] Brun [[/margin]] NOTE: On way back to Huanaco, at 10:55am., at 8750 ft. but only a few KM further along road, a single Brun flies across road. [[margin]] [[underlined]] Gen [[/underlined]] [[/margin]] SUMMARY: Obviously, most of the species of the "Diglossine Social Complex" are highly segregated in this Panao area. [[margin]] CC [[/margin]] CC's apparently confined to low, sparse scrub, interspersed with scattered trees, at low-elevations in the immediate vicinity of human settlement. (This is remarkable. CC's certainly were seen at higher elevations and in more "natural" scrub below Palca) [[margin]] Bari [[/margin]] Baris approximately confined to thicker scrub at slightly higher elevations. [[margin]] Bari CC [[/margin]] It looks very much as if Baris and CC's may be mutually exclusive in this area. Why? And why didn't I see Baris near Tarnia or Palca? (Perhaps the relationship between Bari and CC is comparable to the relationship between [[underlined]] Atlapetes rufinucha [[/underlined]] and [[underlined]] A. schistaceris [[/underlined]]?) [[margin]] Brun [[/margin]] Bruns apparently confined to even higher elevations. [[margin]] Gen [[/margin]] All in all, it would appear that the non-commensal Diglossines are as segregated here as they are in Northern Bolivia [[margin]] Scan [[/margin]] Scan is the great exception here. It [[underlined]] does [[/underlined]] seem to be a member of the Diglossine Social Complex here. But it is not micro-