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Mixed Diglossini, July 23, 1965, IX

[[margin]] Albi Caer? Brun? [[/margin]]  3:35 p.m. Nothing visible where Albi and presumed Caer seen earlier.  But I do hear a couple of phrases coming from adjacent forest which [[underlined]] might [[/underlined]] be Brun Twitters.

[[margin]] WCC [[/margin]]  Then decided to walk up hill along scrub between forest and pasture.  3:45 p.m.  See large mixed flock.  Includes at least 1 [[male symbol]] [[checkmark]] WCC (possibly 2), 1 [[female symbol]] [[checkmark]] WCC (identification both sexes quite definitely), 1 [[underlined]] cyanocephala, [[/underlined]] 2 [[underlined]] Anemoscopus, [[/underlined]] [[checkmark checkmark]] 1 Yellowbelly [[checkmark]], tree creepers [[checkmark checkmark]], [[underlined]] certainly [[/underlined]] [[checkmark checkmark checkmark checkmark]] others.  Probably 20 birds in hall.  Flock quite coherent and moving rapidly downhill.  All birds apparently ranging 6-20 (or 30) ft up.  Flock as a whole fairly noisy.  Lots of CN's.  Can't tell who is real leader of group as a whole.  But certainly [[underlined]] cyanocephala [[/underlined]] j [[right Arrow]] WCC's (both [[male symbol]] & [[female symbol]]) at least once.

[[margin]] WCC [[/margin]]  WCC's apparently picking insects off leaves. 

When flock was first seen, 2 Green & White Hummingbirds were having a fierce, but silent, aerial fight only a few feet away from WCC's and [[underlined]] Anemoscopus. [[/underlined]]

A single Ruddy Flycatcher [[checkmark]] was about 50 ft (perhaps more) behind flock when first seen.  It never actually came close to the other birds but apparently (from the sound of its R's) gradually drifted downhill in their wake – still keeping a very pretty appreciable distance behind them.

The altitude at which this flock was seen was 9125 ft

Ending observations 5:07 p.m.

[[margin]] Sitti WCC [[/margin]]  COMMENT:  There may be at least some geographical segregation of diglossini here.  Note that I did [[underlined]] not [[/underlined]] see any Sittis with the mixed flocks this afternoon (although WCC's were more or less common).

And I must check on Caer-Albi-Brun relations!