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[[circled]]28[[/circled]]

[[margin note in red]]Cy[[/margin note in red]]

more); [[underlined]] one Cy [[underlined]]; one [[underlined]] Atlapetes rufinucha [[/underlined]], several Slatey Thrushes (usual species); lots of hummingbirds; flycatchers; furnariids.  Definitely no BYB's, [[underlined]] cyanocephala [[/underlined]], Yellow-bellies; or [[underlined]] T. heinei [[/underlined]]. The flock in general was quiet; and did not make much progress while we watched it (approx. 15 minutes).

The "center" of the flock was usually composed of Blue & Blacks (with or without some or any of the others).  But 1 or 2 Blue & Blacks sometimes flew away from the group without being followed.  When the Blue and Black's were at the center, they were 
[[margin note in red]]Cy[[/margin note in red]] usually surrounded by fly catching Redstarts.  The [[underlined]] Cy [[/underlined]] and the [[underlined]] rufinucha [[/underlined]] were frequently on the outskirts of the group. Most of the members of the flock stayed 10-40 ft up in trees.  The Cy 
[[margin note in red]]Cy[[/margin note in red]] and the [[underlined]] rufinucha [[/underlined]] sometimes went low (only a few feet above ground) in scrub at edge.

The Yellow-faced Redstarts do appear to be regular members of mixed flocks. But I have not been able to determine if they play exactly the same role as Collared Redstarts in Chiriqui (I wonder if Collared and White-Faced Redstarts are particularly closely related???).

11:05 am.  Another area, same altitude.  Open second growth trees.  See a single Cy follow a pair of [[underlined]] cyanocephala [[/underlined]].
[[margin note in red]]Cy[[/margin note in red]]

I am somewhat surprised to find BYB's, Cys, and Yellow-bellies in mixed flocks here.
[[margin note in red]]Cy[[/margin note in red]]

Must check to see the position of this area within total ranges of the Yellow-belly and BYB.

Cy is the most remarkable.  At first I thought it might be particularly gregarious in the Central Andes near Medellin and
[[margin note in red]]Cy[[/margin note in red]]