References

Baldwin, J. D., and Baldwin, J.I.  (1976).  "Vocalizations of Howler Monkeys (Alouatta palliata) in Southwestern Panama." Folia Primatologica 26: 81-108.

Oregon Zoo, Our Animals: Black Howler Monkey

Smuts, B., Cheney, D., Seyfarth, R., Wrangham, R., and Struhsaker, T. (1987).  Primate Societies.  Chicago, The University of Chicago.

Gaulin, S. a. G. C.  (1982).  "Behavioral Ecology of Alouatta seneculus in Andean Cloud Forest." International Journal of Primatology 3: 1-32.

Chiarello, A.  (1993).  "Activity Pattern of the Brown Howler Monkey Alouatta fusca in a Forest Fragment of Southeastern Brazil." Primates 34(3): 289-293.

Estrada, A., Juan-solano, S., Martinez, T., and Coates-Estrada, R.  (1999).  "Feeding and General Activity Patterns of a Howler Monkey (Allouatta palliata) Troop Living in a Forest Fragment at Los Tuxtlas, Mexico." American Journal of Primatology 48: 167-183.

Zucker, E., Clarke, M., Glander, K., and Scott, N.  (1996).  "Sizes of Home Ranges and Howling Monkey Groups at Hacienda La Pacifica, Costa Rica: 1972-1991."  Brenesia 45-46: 153-156.


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