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17        11

  This Mobbing continued for at least 10 minutes.  Rather surprisingly, it did not attract a single other mammal or bird.  Eventually, the individuals fell silent and drifted off.  And went up to 20-25 ft level as they did so.

  One peculiar behavior of some of these tamarins also was performed by some of the individuals of the last group seen yesterday.  It would seem that this species frequently leaps in upright posture from sapling to sapling.  Very Propitthecus-like.  They also show a slight tendency to dodge behind trunks occasionally. Like Abuella.

  They can descend trunks either head upward or head downward.  I think that the latter is more common.

7)  10:55 am.  Another patch of forest.  Tall trees, rather scattered.  Little undergrowth.  See 1 Saki.  40-50 ft up.  Unfortunately it sees us almost as soon as we see it.  (It may have reacted to alarm notes of neighboring oropendolas.)  Utters lots of "Rattles," "Rattles" ending in muffled Grunts or Roars, and Roars.  No "real" single Grunts.  Roars extremely  variable.  Some hoarse, nasal, and high.  Others deep and gruff and aggressive sounding.  "Rattles" also extremely variable.  Some extremely deep, rather gruff.  Others moderately high.  (I.E. range of variation such as in Roar "complex.")

  When animal calms down, temporarily, utters only "Rattles."  And rather high ones.  "Rattles" must be lower intensity than Roars.

  No sign of SS at any time.  Or Tail-lashing.

  Go on walking and walking and walking.  Through