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99

  Wait until 3:15 pm without seeing hide nor hair of the animals. Obviously alarmed by my presence. Very shy. This probably is typical of the species. (I.E. the inds. of the other group by the highway probably have become unusually tame, habitated to the constant passing of pedestrians and traffic.)

El Pepino
September 23,1968

  Going to work in area above campomento this morning.  It rained last night.  And it is cloudy at dawn.  But again it looks as if it might clear up.  Perhaps it really will this time.

  Reach lowest patch of forest 6:25 am.  Very quiet.

  NOTE:  After talking to the F's and Autuco, I have come to the conclusion that many of the Whistles which I thought might be uttered by tamarins, when I could not see the animals, were actually uttered by birds.  There is something around here - probably a fly catcher - which sounds very tamarin-like.  

  7:15 am.   Region of very mixed vegetation in main patch of forest.  Some tall trees, tangles, and lots of low young second growth.  See tamarins.  Apparently only two inds.  50 ft apart.  One 30-40 ft up in trees.  The other 15 ft up scrub and tangles.  Unfortunately seen largely in silhouette.  But at least one looked as if it might be Trizonal.  (One, at least, had less extensively white muzzle than the fuscicolles near Valparaiso.  Sort of dingy gray.  This also was true of the captive ind. seen a few days ago.)