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[[circled]] 44 [[/circled]]
[fa]ced Whitestart) which range from very high to very low. There also are a number of species (e.g. the G'T and [[underline]] Cnemoscopus [[/underline]]) which obviously prefer middle heights and thus tend to bridge the gap between high and low. Thus the flocks here are quite comparable to the higher altitude flocks in Chiriqui.
 
Thinking it over, however, I must say that flocking behavior here seems to be even [[underline]] more [[/underline]] highly developed than in Chiriqui.

Occasional clouds coming up 8:00 am

8:10 Everything very quiet now. All the birds in the area seemed to have been "sucked out" by the departure of the mixed flocks. 

All the birds except Sooty Thrushes! See single Sooty Thrush alone. Also [[underline]] hear [[/underline]] some White-bearded Flycatchers. High in trees. Apparently alone. 

Incidentally, when the big flock split up, the tree sub-group went down hill while the scrub sub-group went up hill. 
I wonder how many flocks there are on this mountain??? Probably less than one might suppose from reading my notes. Each flock probably covers a very wide area during a morning. And I have probably encountered the same flocks in many different places.
 
Well! Well! Down road a bit. See single [[underlined]] Atlapetes brunnei-nucha [[/underlined]] in low scrub, new second growth on land slide 2730 m 8810 ft. Bird definitely alone. Uttering "Seeet" Notes (very [[underline]] rufinucha [[/underline]] -like) and soft "Tsit"s. 

See a couple more Sooty Thrushes alone 8:45 am

8:59. Catch glimpse bird low in very dense scrub edge slide. Uttering "Seeet" Notes. Definitely not Atlapetes. Might well have been large Diglossa! But appeared to be all black, without humeral patches!

[[margin, in red]] Black 85 [[/margin, in red]]
Then catch another glimpse [[red check mark]] of a Black Diglossa-like bird in scrub on the slide itself 9:10 am.