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[[margin in red]] general [[/margin]]
Incidentally, I am becoming more and more convinced that the pattern blue or gray above - chestnut or buffy below is purely a "follower's uniform." The species that possess such patterns do not seem to react to one another in any very strong or specialized manner; but they all probably play similar roles, regular active nuclear and/or attendant, in mixed flocks including other species of different patters and colors.

It was particularly interesting that the pair of [[underlined]] B. nigrocristatus [[/underlined]]did [[double underlined]]not[[/double underlined]] join the mixed flack.  Altho the flock must have passed within 50 ft of them. After the flock disappeared from view, I found the pair of [[underlined]] nigrocristatus [[/underlined]]again exactly where I saw them before.

Is [[underlined]] nigrocristatus [[/underlined]]less strongly attracted to groups composed of Blasik-chicks, furnariids, blue or gray and chestnut or buffy species, [[underlined]] e.g. [[/underlined]] the common groups at highest altitudes here, than to some of the species common at slightly lower altitudes, [[underlined]] e.g. [[/underlined]] Bl & Or. Stripes, etc.? Or is it less attracted to rapidly moving groups than to slower groups? Or is it less strongly attracted to larger groups than to small groups? Or was the absence of joining reactions by this particular pair of [[underlined]]  nigrocristatus [[/underlined]] pure "coincidence."

The amount of vocalizations in this region now would suggest that the only species likely to be breeding at the present time are Myst, [[underlined]] rugrocristatus[[?]][[/underlined]],and(possibly)the Whitestart.

I was interested to see that there were more, and/or more elaborate or highly integrated flocks, here today than yesterday - and that the weather here was worse than yesterday. There does seem to be a positive correlation, here, between bad weather and mixed flock formation.

Incidentally - for comparative purposes - I might note that this area does not appear to be more humid that then Machu Picchu area - less humid if anything. And like the Machu Picchu area it is a mixture