Electronic Supplementary Material
Data Quality and the Comparative Method: The Case of Primate Group Size
Samantha K. Patterson∙ Aaron A. Sandel∙ Jordan A. Miller∙ John C. Mitani
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References for Supplementary Appendix 1
Aldrich-Blake, F.P.G., Bunn, T.K., Dunbar, R.I.M., & Headley, P.M. (1971).
Observations on baboons, Papio anubis, in an arid region in Ethiopia. Folia
Primatologica,15, 1–35.
Arlet, M. E., Grote, M. N., Molleman, F., Isbell, L. A., & Carey, J. R. (2009).
Reproductive tactics influence cortisol levels in individual male gray-cheeked
mangabeys (Lophocebusalbigena). Hormones and Behavior, 55, 210–216.
Asensio, N., Cristobal-Azkarate, J., Dias, P. A. D., Vea, J. J., & Rodríguez-Luna, E.
(2007). Foraging habits of Alouattapalliatamexicana in three forest
fragments. Folia Primatologica,78, 141–153.
Asensio, N., & Gómez-Marín, F. (2002). Interspecific interaction and predator
avoidance behavior in response to tayra (Eirabarbara) by mantled howler
monkeys (Alouattapalliata). Primates,43, 339–341.
Asensio, N., Korstjens, A. H., Schaffner, C. M., & Aureli, F. (2008). Intragroup
aggression, fissionfusion dynamics and feeding competition in spider monkeys.
Behaviour,145, 983–1001.
Barelli, C., Boesch, C., Heistermann, M., & Reichard, U. H. (2008). Female white-
handed gibbons (Hylobateslar) lead group movements and have priority of
access to food resources. Behaviour,145, 965–981.
Bennett, E. L., & Sebastian, A. C. (1988). Social organization and ecology of proboscis
monkeys (Nasalislarvatus) in mixed coastal forest in Sarawak. International
Journal of Primatology,9, 233–255.
Boinski, S., & Mitchell, C. L. (1995). Wild squirrel monkey (Saimirisciureus)
“caregiver” calls: Contexts and acoustic structure. American Journal of
Primatology,35, 129–137.
Brockelman, W. Y., Reichard, U., Treesucon, U., & Raemaekers, J. J. (1998). Dispersal,
pair formation and social structure in gibbons (Hylobateslar). Behavioral
Ecology and Sociobiology,42, 329–339.
Campbell, C.J. (2000). The reproductive biology of black-handed spider monkeys
(Atelesgeoffroyi): Integrating behavior and endocrinology. Ph.D. thesis, University of California, Berkeley.
Carlson, B. A., Rothman, J. M., & Mitani, J. C. (2013). Diurnal variation in nutrients
and chimpanzee foraging behavior. American Journal of Primatology, 75, 342–
349.
Chapman, C. A. (1990a). Association patterns of spider monkeys: The influence of
ecology and sex on social organization. Behavioral Ecology and Sociobiology,
26, 409–414.
Chapman, C. A. (1990b). Ecological constraints on group size in three species of
neotropical primates. Folia Primatologica,55,1–9.
Chapman, C. A., & Fedigan, L. M. (1990). Dietary differences between neighboring
Cebuscapucinus groups: Local traditions, food availability or responses to
food profitability? Folia Primatologica,54, 177–186.
Chaves, Ó. M, Stoner, K. E, & Arroyo-Rodríguez, V. (2011). Seasonal differences in
activity patterns of Geoffroyi´s spider monkeys (Atelesgeoffroyi) living in
continuous and fragmented forests in Southern Mexico. International
Journal of Primatology,32, 960–973.
Clarke, M. R, Collins, D. A, & Zucker, E. L. (2002). Responses to deforestation in a
group of mantled howlers (Alouattapalliata) in Costa Rica. International
Journal of Primatology,23, 365–381.
Cords, M. (1986). Interspecific and intraspecific variation in diet of two forest guenons,
Cercopithecusascanius and C. mitis.The Journal of Animal Ecology,55, 811–827.
Defler, T. R, & Defler, S. B. (1996). Diet of a group of Lagothrixlagothricha
lagothricha in Southeastern Colombia. International Journal of Primatology,
17, 161–190.
Di Fiore, A., & Rodman, P. S. (2001). Time allocation patterns of lowland woolly
monkeys (Lagothrixlagotrichapoeppigii) in a neotropical terra firma
forest. International Journal of Primatology,22, 449–480.
Digby, L. J., &Barreto, C. E. (1993). Social organization in a wild population of
Callithrixjacchus. Folia Primatologica,61, 123–134.
Doran-Sheehy, D. M., Derby, A. M., Greer, D., & Mongo, P. (2007). Habituation of
western gorillas: The process and factors that influence it. American Journal of
Primatology,69, 1354–1369.
Dunn, J. C., Cristóbal-Azkarate, J., & Veà, J. J. (2009). Differences in diet and activity
pattern between two groups of Alouattapalliata associated with the
availability of big trees and fruit of top food taxa. American Journal of
Primatology,71, 654–662.
Eley, R. M., Strum, S. C., Muchemi, G., & Reid, G. D. F. (1989). Nutrition, body
condition, activity patterns, and parasitism of free-ranging troops of olive
baboons (Papio anubis) in Kenya. American Journal of Primatology, 18,
209–219.
Enstam, K. L., & Isbell, L. A. (2002). Comparison of responses to alarm calls by patas
(Erythrocebuspatas) and vervet (Cercopithecusaethiops) monkeys in relation
to habitat structure. American Journal of Physical Anthropology, 119,3–14.
Fernandez-Duque, E., Juárez, C. P., & Fiore, A. (2008). Adult male replacement and
subsequent infant care by male and siblings in socially monogamous owl
monkeys (Aotusazarai). Primates,49, 81–84.
Fernandez-Duque, E., Rotundo, M., & Sloan, C. (2001). Density and population
structure of owl monkeys (Aotusazarai) in the Argentinean Chaco. American
Journal of Primatology,53, 99–108.
Ford, R.T. (2010). Sexual selection in mantled howling monkeys (Alouattapalliata), with an emphasis on the role of female mate choice. Ph.D. thesis, Duke University.
Forster, S., & Cords, M. (2005). Socialization of infant blue monkeys (Cercopithecus
mitisstuhimanni): Allomaternal interactions and sex differences. Behaviour,
142, 869–896.
Gillespie, T. R., & Chapman, C. A. (2001). Determinants of group size in the red
colobus monkey (Procolobusbadius): An evaluation of the generality of the
ecological-constraints model. Behavioral Ecology and Sociobiology, 50,
329–338.
Gomes, C. M, & Boesch, C. (2011). Reciprocity and trades in wild west African
chimpanzees. Behavioral Ecology and Sociobiology, 65, 2183–2196.
Ham, R. M. (1994). Behaviour and ecology of grey-cheeked mangabeys(Cercocebus
albigena) in the Lope reserve, Gabon. Ph.D. thesis, University of Stirling.
Herbinger, I., Boesch, C., & Rothe, H. (2001). Territory characteristics among three
neighboring chimpanzee communities in the Tai national Park, Cote d' Ivoire.
International Journal of Primatology,22, 143–167.
Higham, J. P., Semple, S., MacLarnon, A., Heistermann, M., & Ross, C. (2009). Female
reproductive signaling, and male mating behavior, in the olive baboon.
Hormones and Behavior, 55, 60–67.
Hubrecht, R. C. (1985). Home-range size and use and territorial behavior in the
common marmoset, Callithrixjacchusjacchus, at the Tapacura field station,
Recife, Brazil. International Journal of Primatology, 6, 533–550.
Laporte, M. N. C., & Zuberbühler, K. (2010). Vocal greeting behaviour in wild
chimpanzee females. Animal Behaviour, 80, 467–473.
Lazaro-Perea, C., Castro, C. S. S., Harrison, R., Araujo, A., Arruda, M. F., & Snowdon,
C. T. (2000). Behavioral and demographic changes following the loss of the
breeding female in cooperatively breeding marmosets. Behavioral Ecology and
Sociobiology,48, 137–146.
Makwana, S. C. (1978). Field ecology and behaviour of the rhesus macaque (Macaca
mulatta): I. Group composition, home range, roosting sites, and foraging
routes in the Asarori Forest. Primates,19, 483–492.
Masi, S., Cipolletta, C., and Robbins, M. M. (2009). Western lowland gorillas (Gorilla
gorilla gorilla) change their activity patterns in response to frugivory. American
Journal of Primatology,71, 91–100.
Matsuda, I., Tuuga, A., Akiyama, Y., & Higashi, S. (2008). Selection of river crossing
location and sleeping site by proboscis monkeys (Nasalislarvatus) in Sabah,
Malaysia. American Journal of Primatology,70, 1097–1101.
Melnick, D. J. (1981). The genetic consequences of primate social organization: A
review of macaques, baboons and vervet monkeys. Genetica, 73, 117–
135.
Milton, K. (1980). The foraging strategy of howler monkeys: A study in primate
economics. New York: Columbia University Press.
Nakagawa, N. (1998). Indiscriminate response to infant calls in wild patas monkeys
(Erythrocebuspatas).Folia Primatologica,69, 93–99.
Nakagawa, N. (2008). Despotic wild patas monkeys (Erythrocebuspatas) in Kala
Maloue, Cameroon. American Journal of Primatology, 70, 238–246.
Nakagawa, N., Ohsawa, H., & Muroyama, Y. (2003). Life-history parameters of a wild
group of West African patas monkeys (Erythrocebuspataspatas). Primates,
44, 281–290.
Nishimura, A. (2003). Reproductive parameters of wild female Lagothrixlagotricha.
International Journal of Primatology,24, 707–722.
Oliveira, A. C. M., & Ferrari, S. F. (2008). Habitat exploitation by free-ranging
Saguinusniger in Eastern Amazonia. International Journal of Primatology,
29, 1499–1510.
Olupot, W., Chapman, C. A., Brown, C. H., & Waser, P. M. (1994).Mangabey
(Cercocebusalbigena) population density, group size, and ranging: A twenty-
year comparison. American Journal of Primatology,32, 197–205.
Palombit, R. (1994). Dynamic pair bonds in hylobatids: Implications regarding
monogamous social systems. Behaviour,128, 65–101.
Panger, M. A. (1998). Object-use in free-ranging white-faced capuchins (Cebus
capucinus) in Costa Rica. American Journal of Physical Anthropology, 106,
311–321.
Parnell, R. J. (2002). Group size and structure in western lowland gorillas (Gorilla
gorillagorilla) at MbeliBai, Republic of Congo. American Journal of
Primatology,56, 193–206.
Pearl, M. C. (1982). Networks of social relations among Himalayan rhesus monkeys
(Macaca mulatta).Ph.D. thesis. Yale University.
Perry, S., Godoy, I., & Lammers, W. (2012). The Lomas Barbudal Monkey Project:
Two decades of research on Cebuscapucinus. In P. M. Kappeler & D. P. Watts
(Eds.), Long-term field studies of primates (pp. 141–163).Berlin and
Heidelberg: Springer.
Phiapalath, P., Borries, C., & Suwanwaree, P. (2011). Seasonality of group size,
feeding, and breeding in wild red-shanked douclangurs (Lao PDR). American
Journal of Primatology,73, 1134–1144.
Potts, K. B, Watts, D. P, & Wrangham, R. W. (2011). Comparative feeding ecology of
two communities of chimpanzees (Pan troglodytes) in Kibale National Park,
Uganda. International Journal of Primatology,32, 669–690.
Raemaekers, J. (1980). Causes of variation between months in the distance traveled
daily by gibbons. Folia Primatologica,34, 46–60.
Robinson, J. G. (1979). Vocal regulation of use of space by groups of titi monkeys
Callicebusmoloch. Behavioral Ecology and Sociobiology, 5, 1–15.
Rudran, R. (1978). Socioecology of the blue monkeys (Cercopithecus mitis
stuhlmanni) of the Kibale Forest, Uganda. Smithsonian Contributions to Zoology, 249, 1–88.
Salmi, R., Hammerschmidt, K., & Doran-Sheehy, D.M. (2013). Western gorilla vocal
repertoire and contextual use of vocalizations.Ethology, 119, 831–847.
Savage, A., Giraldo, L. H., Soto, L. H., & Snowdon, C. T. (1996). Demography, group
composition, and dispersal in wild cotton-top tamarin (Saguinusoedipus)
groups. American Journal of Primatology,38, 85–100.
Shimada, M. K., Hayakawa, S., Fujita, S., Sugiyama, Y., & Saitou, N. (2009). Skewed
matrilineal genetic composition in a small wild chimpanzee community.
Folia Primatologica, 80, 19–32.
Smith, L. W., Link, A., & Cords, M. (2008). Cheek pouch use, predation risk, and
feeding competition in blue monkeys (Cercopithecus mitis stuhlmanni).
American Journal of Physical Anthropology, 137, 334–341.
Smuts, B. B., & Watanabe, J. M. (1990). Social relationships and ritualized greetings
in adult male baboons (Papio cynocephalus anubis). International Journal of
Primatology,1, 147–172.
Soini, P. (1982). Ecology and population dynamics of the pygmy marmoset, Cebuella
pygmaea. Folia Primatologica,39, 1–21.
Soini, P. (1987). Sociosexual behavior of a free-ranging Cebuellapygmaea
(Callitrichidae, platyrrhini) troop during postpartum estrus of its
reproductive female. American Journal of Primatology,13, 223–230.
Stanford, B. (1995). The influence of chimpanzee predation on group size and anti-
predatory behaviour in red colobus monkeys. Animal Behaviour,49, 577–587.
Stevenson, P. R. (2000). Seed dispersal by woolly monkeys (Lagothrixlagothricha)
atTinigua National Park, Colombia: Dispersal distance, germination rates,
and dispersal quantity. American Journal of Primatology,50, 275–289.
Stevenson, P. R., Quinones, M. J., & Ahumada, J. A. (1994). Ecological strategies of
woolly monkeys (Lagothrixlagotricha) at Tinigua National Park, Colombia.
American Journal of Primatology,32, 123–140.
Stone, A. (2008). Seasonal effects on play behavior in immature Saimirisciureus in
Eastern Amazonia. International Journal of Primatology, 29, 195–205.
Strum, S. C., & Western, J. D. (1982). Variations in fecundity with age and
environment in olive baboons (Papio anubis). American Journal of
Primatology,3, 61–76.
Treves, A. (1999). Vigilance and spatial cohesion among blue monkeys.Folia
Primatologica,70, 291–294.
Wang, E., & Milton, K. (2003). Intragroup social relationships of male Alouattapalliata on Barro Colorado Island, Republic of Panama.International Journal of Primatology, 24, 1227–1243.
Windfelder, T. L.,Lwanga, J. S. (2002). Group fission in red-tailed monkeys
(Cercopithecusascanius) in Kibale National Park, Uganda. In M. E. Glenn & M.
Cords (Eds.), The guenons: Diversity and adaptation in African monkeys.Developments in Primatology: Progress and Prospects. New York: Springer Science+Business Media.
Wright, P. C. (1978). Home range, activity pattern, and agonistic encounters of a
group of night monkeys (Aotustrivirgatus) in Peru. Folia Primatologica,
29, 43–55.
Yeager, C. P. (1990). Proboscis monkey (Nasalislarvatus) social organization: Group
structure. American Journal of Primatology, 20, 95–106.
Youlatos, D. (1999). Positional behavior of Cebuellapygmaea in Yasuni National
Park, Ecuador. Primates,40, 543–550.
References for Supplementary Appendix 2
Aldrich-Blake, F. P. G. (1970). The ecology and behaviour of the blue monkey,Cercopithecus mitis. Ph.D. thesis, University of Bristol.
Aldrich-Blake, F. P. G., Bunn, T. K., Dunbar, R. I. M., & Headley, P. M. (1971).
Observations on baboons, Papio anubis, in an arid region of Ethiopia. Folia
Primatologica,15, 1–35.
Altmann, S. A., & Altmann, J. (1970). Baboon ecology. Chicago: University of Chicago Press.
Baldwin, L. A., Peterson, T. L., & Teleki, G. (1977). Field research on callitrichid and
cebid monkeys: An historical, geographical, and bibliographical listing.
Primates,18, 485–507.
Beauchamp, G., & Cabana, G. (1990). Group size variability in primates.Primates,
31, 171–182.
Butynski, T. M. (1990). Comparative ecology of blue monkeys (Cercopithecus mitis)
in high- and low-density subpopulations. Ecological Monographs,60, 1–26.
Carpenter, C. R. (1934). A field study of the behavior and social relations in howling
monkeys (Alouattapalliata). Comparative Psychology Monographs, 10,1–168.
Carpenter, C. R. (1962). Field studies of a primate population. In A. Bliss (Ed.), Roots
of behavior (Vol. 8, pp. 286–294). New York: Harper & Row.
Chalmers, N. (1968). Group composition, ecology, and daily activities of free living
mangabeys in Uganda. Folia Primatologica, 8, 247–262.
Chapman, C. A., & Chapman, L. J. (2000). Determinants of group size in primates: the
importance of travel costs. In S. Boinski, & P. A. Garber (Eds.), On the move:
How and why animals travel in groups (pp. 24–42). Chicago: University of
Chicago Press.
Chapman, C. A., & Pavelka, M. S. M. (2005). Group size in folivorous primates:
Ecological constraints and the possible influence of social factors.Primates,
46,1–9.
Chism, J., & Rowell, T. E. (1988). The natural history of patas monkeys. In A. Gautier-
Hion, F. Bourliere, J. P. Gautier & J. Kingdon (Eds.), A primate radiation:
Evolutionary biology of the African guenons (pp. 412–438). Cambridge, U.K.:
Cambridge University Press.
Chivers, D. J. (1969). On the daily behaviour and spacing of howling monkey groups.
Folia Primatologica, 10, 48–102.
Chivers, D. J. (1972a). An introduction to the socio-ecology of Malayan forest
primates. In R. P. Michael & J. H. Crook (Eds.), Comparative ecology and
behaviour of primates (pp. 101–170). London: Academic Press.
Chivers, D. J. (1972b).The siamang and the gibbon in the Malay Peninsula.In D. M.
Rumbaugh (Ed.), Gibbon and Siamang (Vol. 1, pp. 103–135). Basel: Karger.
Chivers, D. J. (1974).The siamang in Malay.Contributions to Primatology, 4,1–335.
Clarke, M. R., Zucker, E. L., & Scott Jr., N. J. (1986). Population trends of the mantled
howler groups of La Pacifica, Guanacaste, Costa Rica. American Journal of
Primatology,11, 79–88.
Clutton-Brock, T. H. (1972). Feeding and ranging behaviour of the red colobus
monkey.Ph.D. thesis, University of Cambridge.
Clutton-Brock, T. H. (1974). Primate social organization and ecology.Nature,
London, 250, 539–542.
Clutton-Brock, T. H. (1975a). Feeding behaviour of red colobus and black and white
colobus in East Africa. Folia Primatologica, 23, 165–207.
Clutton-Brock, T. H. (1975b). Ranging behaviour of red colobus (Colobusbadius
tephrosceles) in the Gombe National Park. Animal Behaviour,23, 706–722.
Clutton-Brock, T. H., & Harvey, P. H. (1977a).Primate ecology and social organization.
Journal of Zoology, 183,1–39.
Clutton-Brock, T. H., & Harvey, P. H.(1977b). Species differences in feeding and
ranging behavior in primates. In T. H. Clutton-Brock (Ed.), Primate ecology (pp. 557–584). London: Academic Press.
Collias, N., & Southwick, N. (1952). A field study of population density and social
organization in howling monkeys. Proceedings of the American Philosophical
Society, 96, 143–156.
Cords, M. (1986). Interspecific and intraspecific variation in diet of two forest guenons, Cercopithecusascaniusand C. mitis.Journal of Animal Ecology, 55, 811–827.
Cords, M. (1987). Forest guenons and patas monkeys: Male-male competition in
one-male groups. In B. Smuts, D. L. Cheney, R. M. Seyfarth, R. W. Wrangham
T. R. Struhsaker (Eds.), Primate societies (pp. 98–111). Chicago: University of
Chicago Press.
Crockett, C. M., & Eisenberg, J. F. (1987). Howlers: Variation in group size and demography. In B. Smuts, D. L. Cheney, R. M. Seyfarth, R. W. Wrangham
T. R. Struhsaker (Eds.), Primate societies (pp. 54–68). Chicago: University of
Chicago Press.
Decker, B. S., & Kinnaird, M. F. (1992). Tana river red colobus and rested mangabey:
Results of recent censuses.American Journal of Primatology, 26, 47–52.
Devore, I., & Hall, K. R. L. (1965). Baboon ecology. In I. Devore (Ed.), Primate
behavior: Field studies of monkeys and apes (pp. 20–52). New York: Holt,
Rinehart & Winston.
DeVos, A., & Omar, A. (1971). Territories and movements of sykes monkeys
(Cercopithecus mitis kolbiNeuman) in Kenya.Folia Primatologica, 16, 196–
205.
Di Fiore, A. (2003). Ranging behavior and foraging ecology of lowland woolly
monkeys (Lagothrixlagotrichapeoppigii) in Yasuni national park, Ecuador.
American Journal of Primatology,59, 47–66.
Dunbar, R. I. M. (1992). Neocortex size as a constraint on group size in primates.
Journal of Human Evolution, 22, 469–493.
Eisenberg, J. F., & Kuhn, R. E. (1966). The behavior of Atelesgeoffroyi and some
related species. Smithsonian Miscellaneous Collections,151, 1–63.
Eisenberg, J. F., & Thorington, R. W. (1973). A preliminary analysis of a neotropical
mammal fauna. Biotropica, 5, 150–161.
Ellefson, J. O. (1974). A natural history of white-handed gibbons in the Malayan
Peninsula. In D. M. Rumbaugh (Ed.), Gibbon and siamang (Vol. 3, pp. 1–136).
Basel: Karger.
Estrada, A. (1982). Survey and census of howler monkeys (Alouattapalliata) in the
rainforest of “Los Tuxtlas”, Veracruz, Mexico. American Journal of
Primatology, 2, 363–372.
Fedigan, L. M., Fedigan, L., & Chapman, C. A. (1985). A census of Alouattapalliata and
Cebuscapucinus monkeys in Santa Rosa National Park, Costa Rica. Brenesia,
23, 309–322.
Fossey, D. (1974). Observations on the home range of one group of mountain
gorillas (Gorilla gorilla beringei). Animal Behaviour, 22, 568–581.
Fossey, D., & Harcourt, A. H. (1977). Feeding ecology of free-ranging mountain gorilla
(Gorilla gorilla beringei). In T. H. Clutton-Brock (Ed.), Primate ecology: Studies
of feeding and ranging behaviour in lemurs, monkeys and apes. London:
Academic Press.
Freese, C. (1976). CensusingAlouattapalliata, Atelesgeoffroyi, and Cebuscapucinus
in the Costa Rica dry forest. In R. W. Thorington Jr & P. G. Heltne (Eds.),
Neotropical primates: Field studies and conservation (pp. 4–9). Washington, DC:
National Academy of Sciences.
Galat, G., & Galat-Luong, A. (1985). La communaute de primatesdiurnes de la foret
de Tai, Cote d'Ivoire. Terre Vie, 40, 3–32.
Gatinot, B. L. (1975). Ecologie d'un colobebai(Colobusbadiustemmnicki, Kuh, 1820)
dans un milieu marginal au Senegal. Ph.D. thesis, Paris VI.Universite.
Gillespie, T. R., & Chapman, C. A. (2001). Determinants of group size in the red
colobus monkey (Procolobusbadiusi): An evaluation of the generality of the
ecological constraints model. Behavioral Ecology and Sociobiology, 50, 329–
338.
Goldizen, A. W. (1987). Tamarins and marmosets: Communal care of offspring, In B. Smuts, D. L. Cheney, R. M. Seyfarth, R. W. Wrangham & T. R. Struhsaker (Eds.), Primate societies (pp. 34–43). Chicago: University of
Chicago Press.
Goldsmith, M. L. (1993). Ranging behavior of the western lowland gorilla in the
Central African Republic: A preliminary study. Paper presented at the 62nd
annual meeting of the American Association of Physical Anthropology, Toronto, Canada.
Hall, K. R. L. (1966). Behaviour and ecology of the wild patas monkey, Erythrocebus
patas, in Uganda. Journal of Zoology London, 148, 15–87.
Heltne, P. G., Turner, D. C., & Scott, N. J. (1976). Comparison of census data on
Alouattapalliata from Costa Rica and Panama. In R. W. Thorington Jr & P. G.
Heltne (Eds.), Neotropical primates: Field studies and conservation (pp. 10–19).
Washington, DC: National Academy of Sciences.
Herbinger, I., Boesch, C., & Rothe, H. (2001). Territory characteristics among three
neighboring chimpanzee communities in the Tai national Park, Cote d' Ivoire.
International Journal of Primatology,22, 143–167.
Hill, W. C. O. (1966). Primates (Vol. 6). Edinburgh: University Press.
Hill, R. A., & Lee, P. C. (1998). Predation risk as an influence on group size in
cercopithecoid primates: Implications for social structure. Journal of Zoology,
245, 447–456.
Hubrecht, R. C. (1984). Field observation on group size and composition of the
common marmoset (Callithrixjacchusjacchus), at Tapacura, Brazil. Primates,
25, 13–21.
Hubrecht, R. C. (1985). Home range size and territorial behavior in the common
marmosets, Callithrixjacchusjacchus, at the Tapacura field station, Recife,
Brazil. International Journal of Primatology,16, 533–550.
Izawa, K. (1976). Group sizes and compositions of monkeys in the upper Amazon
Basin. Primates, 17, 367–399.
Izawa, K. (1978). A field study of the ecology and behavior of the black-mantled
tamarin (Saguinusnigricollis). Primates,19, 241–274.
Janson, C. H., & Goldsmith, M. L. (1995). Predicting group size in primates: Foraging
costs and predation risks. Behavioral Ecology, 6, 326–336.
Jolly, A. (1972). The evolution of primate behavior. New York: MacMillan.
Kawabe, M., & Mano, T. (1972). Ecology and behavior of the wild proboscis monkey,
Nasalislarvatus (Wurmb.) in Sabah, Malaysia.Primates,13, 213–227.
Kingdon, J. (1971). East African mammals (Vol. 1). London: Academic Press.
Leighton, D. R. (1987). Gibbons: Territoriality and monogamy. In B. Smuts, D. L. Cheney, R. M. Seyfarth, R. W. Wrangham & T. R. Struhsaker (Eds.), Primate Societies (pp. 134–145). Chicago: University of Chicago Press.
Lindberg, D. G. (1971). The rhesus monkey in North India: An ecological and
behavioral study. In L. A. Rosenblum (Ed.), Primate behavior: Developments in
field and laboratory research (pp. 1–106). New York: Academic Press.
Lindberg, D. G. (1977). Feeding behavior and diet of rhesus monkeys (Macaca
mulatta) in a Siwalik forest in North India. In T. H. Clutton-Brock (Ed.),
Primate ecology: Studies of feeding and ranging behaviour in lemurs, monkeys
and apes. London: Academic Press.
Lippold, L. K. (1988). A census of primates in Cabo Blanco Absolute Nature Reserve,
Costa Rica. Brenesia,29, 101–105.
Majolo, B., de BortoliVizioli, A., & Schino, G. (2008). Costs and benefits of group
living in primates: Group size effects on behaviour and demography. Animal