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Puerto Armuelles, July 19, 1967, VIII (18)

3:50 pm. come across group Saimiri. At least 78 individuals. probably more. Ranging 10-45 ft up. Very "lethargic". Resting a lot. Feeding occasionally.
They tend to rest like howlers. Lying down flat on branch, with tail and 1-3 limbs dangling. They also rest in fairly conspicuous places with some appreciable frequency. I.E. they do not disappear into tangles in quite the same way as Callicebus.
NOTE AND EXPLANATION: The "lethargy" of these animals during the middle of the day is only moderate from a comparative point of view. They certainly seem to be less active, at this time of the day, than many Puiche's. But they certainly also are much more active than all or most Callecubus. Probably their genral level of activity is much as in Cebus.
In general, the animals ignore us almost completely. No SS A few brief noises. Some undistinguished high pitched noises. Probably Squ's and or soft "Tsits". And also some notes which could be transcribed as "BRRRP". Presumably homologous with Brrr patterns individuals of other subspecies.
These Brrrp notes sound exactly intermediate between brief L Trll's and QM or MGB. Quite possibly they are produced when the relative strength of tendencies is intermediate between that of typical L Trll's and that of typical QM or MGB. When E is relatively weaker than in L Trll, but relatively stronger than in QM. It is also obvious, however, that these Brrp notes are very low intensity. The animals bothered to lo

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