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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