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(35) Western Cordillera Colombia TOTAL = 28 hrs July 22, 1965 Valley Rio Urrao [[margin]] Brun [[/margin]] 1:30 p.m. 9400 ft. Edge long thin strip of what looks like mature "upper sub-tropical" forest (extending into large pasture). Se single [[underlined]] Brun [[/underlined]] [[checkmark]] alone. Perched 10 ft up in bush or small tree. Then off into low scrub a few yards down hill. Then I hear a few R-Zaza patterns in my neighborhood. Same Brun back in tree a few minutes later. Now see that there is a single Ruddy Flycatcher only 10 ft away. No reaction between the 2 species. Then Brun flies off. Flycatcher does not follow. [[margin]] Brun [[/margin]] NOTE: This area looks [[underlined]] quite [[/underlined]] moist (although we are in the middle of "verano" now, and it is has been an unusually dry verano). There are white-leaved [[?ropia]] at slightly lower altitudes. So Bruns here are (at least) not absolutely confined to relatively dry areas. SEE ALSO TODAY'S NOTES ON GENERAL MIXED FLOCKS. (Brun, Cy, Sitti, Scan, other hummingbirds.) [[margin]] Brun [[/margin]] COMMENT: Brun would seem to be the dominant diglossine here!!! This [[underlined]] does [[/underlined]] surprise me. Area obviously relatively very humid. I also am surprised to find Bruns relatively frequently high in trees. And relatively frequently associated with mixed flocks!!! The Bruns here would appear to be almost (or at least) "semi-commensals". (This may, of course, help to explain why they have survived in this region.) [[margin]] Gen [[/margin]] My brief observations today would suggest that the members of the "diglossine complex" (possibly including hummingbirds) have partly or completely overlapping territories – but do not show overt