Complexities of Using Wild versus Captive Activity Budget Comparisons for Assessing Captive Primate Welfare

References

• Animal Welfare Act. (2006). The welfare of farmed animals (England) regulations 2007. Department for Environment, Food and Rural Affairs (DEFRA). UK: Ministry of Agriculture Fisheries and Food.
   Google Scholar
• Aronsen, G. P., Beuerlein, M. M., Watts, D. P., & Bribiescas, R. G. (2015). Redtail and red colobus monkeys show intersite urinary cortisol concentration variation in Kibale National Park, Uganda. Conservation Physiology, 3(1), cov006.
   PubMedGoogle Scholar
• Aureli, F., & Yates, K. (2010). Distress prevention by grooming others in crested black macaques. Biology Letters, 6, 27–29.
   PubMed Web of Science ®Google Scholar
• Barnett, J. L., & Hemsworth, P. H. (2009). Welfare monitoring schemes: Using research to safeguard welfare of animals on the farm. Journal of Applied Animal Welfare Science, 12(2), 114–131.
   PubMed Web of Science ®Google Scholar
• Bassett, L., & Buchanan-Smith, H. (2007). Effects of predictability on the welfare of captive animals. Applied Animal Behaviour Science, 102, 223–245.
   Web of Science ®Google Scholar
• Beisner, B. A., & Isbell, L. A. (2008). Ground substrate affects activity budgets and hair loss in outdoor captive groups of rhesus macaques (Macaca mulatta). American Journal of Primatology, 70(12), 1160–1168.
   PubMed Web of Science ®Google Scholar
• Bloomsmith, M., & Lambeth, S. (1995). Effects of predictable versus unpredictable feeding schedules on chimpanzee (Pan troglodytes) behaviour. Applied Animal Behaviour Science, 44, 65–74.
   Web of Science ®Google Scholar
• Boinski, S., & Mitchell, C. L. (1992). Ecological and social factors affecting the vocal behavior of adult female squirrel monkeys. Ethology, 92(4), 316–330.
   Web of Science ®Google Scholar
• Boissy, A., Manteuffel, G., Jensen, M. B., Moe, R. O., Spruijt, B., Keeling, L. J., … Aubert, A. (2007). Assessment of positive emotions in animals to improve their welfare. Physiology & Behavior, 92(3), 375–397.
   PubMed Web of Science ®Google Scholar
• Bonier, F., Martin, P. R., Moore, I. T., & Wingfield, J. C. (2009). Do baseline glucocorticoids predict fitness? Trends in Ecology and Evolution, 24(11), 634–642.
   PubMed Web of Science ®Google Scholar
• Carlitz, E. H. D., Miller, R., Kirschbaum, C., Gao, W., Hanni, D. C., Van Schaik, C. P., & Umapathy, G. (2016). Measuring hair cortisol concentrations to assess the effect of anthropogenic impacts on wild chimpanzees (Pan troglodytes). PLOS ONE, 11(4), 1–13.
   Web of Science ®Google Scholar
• Chamove, S., Hosey, G., & Schaetzel, P. (1988). Visitors excite primates in zoos. Zoo Biology, 7(4), 359–369.
   Web of Science ®Google Scholar
• Chivers, D. J. (1974). The siamang in Malaya: A field study of a primate in tropical rain forest (Contributions to Primatology, Vol. 4). Basel: Karger.
   Google Scholar
• Choo, Y., Todd, P., & Li, D. (2011). Visitor effects on zoo orangutans in two novel, naturalistic enclosures. Applied Animal Behaviour Science, 133, 78–86.
   Web of Science ®Google Scholar
• Christiansen, F., Rasmussen, M. H., & Lusseau, D. (2013). Inferring activity budgets in wild animals to estimate the consequences of disturbances. Behavioral Ecology, 24(6), 1415–1425.
   Web of Science ®Google Scholar
• Claxton, A. (2011). The potential of the human-animal relationship as an environmental enrichment for the welfare of zoo-housed animals. Applied Animal Behaviour Science, 133, 1–10.
   Web of Science ®Google Scholar
• Cooke, C., & Schillaci, M. A. (2007). Behavioural responses to the zoo environment by white handed gibbons. Applied Animal Behavioural Science, 106, 125–133.
   Web of Science ®Google Scholar
• Dasilva, G. L. (1992). The western black-and-white colobus as a low-energy strategist: Activity budgets, energy expenditure and energy intake. The Journal of Animal Ecology, 61, 79–91.
   Web of Science ®Google Scholar
• Dawkins, M. S. (1989). Time budgets in red junglefowl as a baseline for the assessment of welfare in domestic fowl. Applied Animal Behaviour Science, 24(1), 77–80.
   Web of Science ®Google Scholar
• Dawkins, M. S. (2001). How can we recognize and assess good welfare? In D. M. Broom (Ed.), Coping with challenge: Welfare in animals including humans (pp. 63–76). Berlin: Dahlem University Press.
   Google Scholar
• Doran, D. M., McNeilage, A., Greer, D., Bocian, C., Mehlman, P., & Shah, N. (2002). Western lowland gorilla diet and resource availability: New evidence, cross‐site comparisons, and reflections on indirect sampling methods. American Journal of Primatology, 58(3), 91–116.
   PubMed Web of Science ®Google Scholar
• Duboscq, J., Micheletta, J., Muhammad, A., Hodges, K., & Thierry, B. (2013). Social tolerance in wild female crested macaques (Macaca nigra) in Tangkoko-Batuangnus Nature Reserve, Sulawesi, Indonesia. American Journal of Primatology, 75, 361–375.
   PubMed Web of Science ®Google Scholar
• Duncan, I. J., & Petherick, J. C. (1991). The implications of cognitive processes for animal welfare. Journal of Animal Science, 69(12), 5017–5022.
   PubMed Web of Science ®Google Scholar
• Dunn, J. C., Cristobal-Azkarate, J., Schulte-Herbuggen, B., Chavira, R., & Vea, J. J. (2013). Travel time predicts faecal glucocorticoid levels in free-ranging Howlers (Alouatta palliata). International Journal of Primatology, 34(2), 246–259.
   Web of Science ®Google Scholar
• Eaton, G. G., Kelley, S. T., Axthelm, M. K., Iliff‐Sizemore, S. A., & Shiigi, S. M. (1994). Psychological well‐being in paired adult female rhesus macaques (Macaca mulatta). American Journal of Primatology, 33(2), 89–99.
   Web of Science ®Google Scholar
• Fernandez, E., Tamborski, M., Pickens, S., & Timberlake, W. (2009). Animal–Visitor interactions in the modern zoo: Conflicts and interventions. Applied Animal Behaviour Science, 120, 1–8.
   Web of Science ®Google Scholar
• Fourie, N. H., Turner, T. R., Brown, J. L., Pampush, J. D., Lorenz, J. G., & Bernstein, R. M. (2015). Variation in vervet (Chlorocebus aethiops) hair cortisol concentrations reflects ecological disturbance by humans. Primates, 56(4), 365–373.
   PubMed Web of Science ®Google Scholar
• Fragaszy, D. M., Boinski, S., & Whipple, J. (1992). Behavioral sampling in the field: Comparison of individual and group sampling methods. American Journal of Primatology, 26(4), 259–275.
   Web of Science ®Google Scholar
• Fraser, D., & Duncan, I. J. (1998). ‘Pleasures’,’pains’ and animal welfare: Toward a natural history of affect. Animal Welfare, 7(4), 383–396.
   Web of Science ®Google Scholar
• Frézard, A., & Pape, G. L. (2003). Contribution to the welfare of captive wolves (Canis lupus lupus): A behavioral comparison of six wolf packs. Zoo Biology, 22(1), 33–44.
   Web of Science ®Google Scholar
• Gartner, M. C., & Weiss, A. (2013). Scottish wildcat (Felis silvestris grampia) personality and subjective well-being: Implications for captive management. Applied Animal Behaviour Science, 147(3–4), 261–267.
   Web of Science ®Google Scholar
• Gilby, I. C., Pokempner, A. A., & Wrangham, R. W. (2010). A direct comparison of scan and focal sampling methods for measuring wild chimpanzee feeding behaviour. Folia Primatologica, 81(5), 254–264.
   PubMed Web of Science ®Google Scholar
• Gillespie, T. R., Barelli, C., & Heistermann, M. (2013). Effects of social status and stress on patterns of gastrointestinal parasitism in wild white‐handed gibbons (Hylobates lar). American Journal of Physical Anthropology, 150(4), 602–608.
   PubMed Web of Science ®Google Scholar
• Gottlieb, D., Capitanio, J. P., & McCowan, B. (2013). Risk factors for stereotypic behavior and self‐biting in rhesus macaques (Macaca mulatta): Animal’s history, current environment, and personality. American Journal of Primatology, 75(10), 995–1008.
   PubMed Web of Science ®Google Scholar
• Gottlieb, D., Coleman, K., & McCowan, B. (2013). The effects of predictability in daily husbandry routines on captive rhesus macaques (Macaca mulatta). Applied Animal Behaviour Science, 143, 117–127.
   PubMed Web of Science ®Google Scholar
• Herrelko, E. S., Vick, S. J., & Buchanan-Smith, H. M. (2012). Cognitive research in zoo‐housed chimpanzees: Influence of personality and impact on welfare. American Journal of Primatology, 74(9), 828–840.
   PubMed Web of Science ®Google Scholar
• Hill, S. P., & Broom, D. M. (2009). Measuring zoo animal welfare: Theory and practice. Zoo Biology, 28(6), 531–544.
   PubMed Web of Science ®Google Scholar
• Hodges, J. K., & Heistermann, M. (2011). Field endocrinology: Monitoring hormonal changes in free-ranging primates. In J. M. Setchell & D. J. Curtis (Eds.), Field and laboratory methods in primatology (2nd ed., pp. 353–370). Cambridge: Cambridge University Press.
   Google Scholar
• Honess, P. E., & Marin, C. M. (2006). Behavioural and physiological aspects of stress and aggression in nonhuman primates. Neuroscience & Biobehavioral Reviews, 30(3), 390–412.
   PubMed Web of Science ®Google Scholar
• Hosey, G. (2000). Zoo animals and their human audiences: What is the visitor effect? Animal Welfare, 9, 343–357.
   Web of Science ®Google Scholar
• Hosey, G. (2005). How does the zoo environment affect the behaviour of captive primates? Applied Animal Behaviour Science, 90, 107–129.
   Web of Science ®Google Scholar
• Hosey, G. (2008). A preliminary model of human–Animal relationships in the zoo. Applied Animal Behaviour Science, 109(2–4), 105–127.
   Web of Science ®Google Scholar
• Hutchins, M. (2006). Variation in nature: Its implications for zoo elephant management. Zoo Biology, 25(3), 161–171.
   Web of Science ®Google Scholar
• Isbell, L. A., & Young, T. P. (1993). Social and ecological influences on activity budgets of vervet monkeys, and their implications for group living. Behavioral Ecology and Sociobiology, 32(6), 377–385.
   Web of Science ®Google Scholar
• Jackson, P. (1992). Endangered Species: Tigers. London, UK: Chartwell Books.
   Google Scholar
• Jaman, M., & Huffman, M. (2008). Enclosure environment affects the activity budgets of captive Japanese macaques (Macaca fuscata). American Journal of Primatology, 70, 1133–1144.
   PubMed Web of Science ®Google Scholar
• Jensen, M. B., & Pedersen, L. J. (2008). Using motivation tests to assess ethological needs and preferences. Applied Animal Behaviour Science, 113(4), 340–356.
   Web of Science ®Google Scholar
• Jensen, P., & Toates, F. M. (1993). Who needs ‘behavioural needs’? Motivational aspects of the needs of animals. Applied Animal Behaviour Science, 37(2), 161–181.
   Web of Science ®Google Scholar
• Jensvold, M. L. A., Sanz, C. M., Fouts, R. S., & Fouts, D. H. (2001). Effect of enclosure size and complexity on the behaviors of captive chimpanzees (Pan troglodytes). Journal of Applied Animal Welfare Science, 4(1), 53–69.
   Google Scholar
• Jin, J., Su, Y., Tao, Y., Guo, S., & Yu, Z. (2013). Personality as a predictor of general health in captive golden snub‐nosed monkeys (Rhinopithecus roxellana). American Journal of Primatology, 75(6), 524–533.
   PubMed Web of Science ®Google Scholar
• Kawai, M. (1965). Newly-acquired pre-cultural behavior of the natural troop of Japanese monkeys on Koshima Islet. Primates, 6(1), 1–30.
   Google Scholar
• Kersey, D. C., & Dehnhard, M. (2014). The use of noninvasive and minimally invasive methods in endocrinology for threatened mammalian species conservation. General and Comparative Endocrinology, 203, 296–306.
   PubMed Web of Science ®Google Scholar
• Koene, P. (2013). Behavioral ecology of captive species: Using behavioral adaptations to assess and enhance welfare of nonhuman zoo animals. Journal of Applied Animal Welfare Science, 16(4), 360–380.
   PubMed Web of Science ®Google Scholar
• Kraus, C., Heistermann, M., & Kappeler, P. M. (1999). Physiological suppression of sexual function of subordinate males: A subtle form of intrasexual competition among male sifakas (Propithecus verreauxi). Physiology & Behavior, 66(5), 855–861.
   PubMed Web of Science ®Google Scholar
• Lappan, S. (2009). The effects of lactation and infant care on adult energy budgets in wild siamangs (Symphalangus syndactylus). American Journal of Physical Anthropology, 140(2), 290–301.
   PubMed Web of Science ®Google Scholar
• Larsen, M. J., Sherwen, S. L., & Rault, J. L. (2014). Number of nearby visitors and noise level affect vigilance in captive koalas. Applied Animal Behaviour Science, 154, 76–82.
   Web of Science ®Google Scholar
• Li, Z., & Rogers, E. (2004). Habitat quality and activity budgets of white-headed langurs in Fusui, China. International Journal of Primatology, 25(1), 41–54.
   Web of Science ®Google Scholar
• Lindburg, D. G. (1988). Improving the feeding of captive felines through application of field data. Zoo Biology, 7(3), 211–218.
   Web of Science ®Google Scholar
• Little, K. A., & Sommer, V. (2002). Change of enclosure in langur monkeys: Implications for the evaluation of environmental enrichment. Zoo Biology, 21(6), 549–559.
   Web of Science ®Google Scholar
• Lukas, K., Hoff, M., & Maple, T. (2003). Gorilla behaviour in response to systematic alternation between zoo enclosures. Applied Animal Behaviour Science, 81, 367–386.
   Web of Science ®Google Scholar
• Macedonia, J. M. (1987). Effects of housing differences upon activity budgets in captive sifakas (Propithecus verreauxi). Zoo Biology, 6(1), 55–67.
   Web of Science ®Google Scholar
• Machatschke, I. H., Wallner, B., & Dittami, J. (2006). Impact of social environment on female chimpanzee reproductive cycles. Hormones and Behaviour, 50, 126–131.
   PubMed Web of Science ®Google Scholar
• Majolo, B., McFarland, R., Young, C., & Qarro, M. (2013). The effect of climatic factors on the activity budgets of Barbary macaques (Macaca sylvanus). International Journal of Primatology, 34(3), 500–514.
   Web of Science ®Google Scholar
• Mallapur, A. (2005). Managing primates in zoos: Lessons from animal behaviour. Current Science, 89(7), 1214–1219.
   Web of Science ®Google Scholar
• Mallapur, A., & Chellam, R. (2002). Environmental influences on stereotypy and the activity budget of Indian leopards (Panthera pardus) in four zoos in southern India. Zoo Biology, 21(6), 585–595.
   Web of Science ®Google Scholar
• Mallapur, A., & Choudhury, C. (2003). Behavioural abnormalities in captive nonhuman primates. Journal of Applied Animal Welfare Science, 6(4), 275–284.
   PubMedGoogle Scholar
• Maréchal, L., Semple, S., Majolo, B., Qarro, M., Heistermann, M., & MacLarnon, A. (2011). Impacts of tourism on anxiety and physiological stress levels in wild male Barbary macaques. Biological Conservation, 144(9), 2188–2193.
   Web of Science ®Google Scholar
• Mason, G. (2006). Stereotypic behaviour in captive animals: Fundamentals and implications for welfare and beyond. In G. Mason & J. Rushen (Eds.), Stereotypic animal behaviour: Fundamentals and applications to welfare (Vol. 2, pp. 325–356). Wallingford, UK: CABI Publishing.
   Google Scholar
• Mason, G. (2010). Species differences in responses to captivity: Stress, welfare and the comparative method. Trends in Ecology and Evolution, 25(12), 713–721.
   PubMed Web of Science ®Google Scholar
• Mason, G., Clubb, R., Latham, N., & Vickery, S. (2007). Why and how should we use environmental enrichment to tackle stereotypic behaviour? Applied Animal Behaviour Science, 102, 163–188.
   Web of Science ®Google Scholar
• Mason, G., & Mendl, M. (1993). Why is there no simple way of measuring animal welfare? Animal Welfare, 2(4), 301–319.
   Web of Science ®Google Scholar
• Mason, G. J., & Latham, N. (2004). Can’t stop, won’t stop: Is stereotypy a reliable animal welfare indicator? Animal Welfare, 13, 57–69.
   Web of Science ®Google Scholar
• Mason, G. J., & Veasey, J. S. (2010). How should the psychological well‐being of zoo elephants be objectively investigated? Zoo Biology, 29(2), 237–255.
   PubMed Web of Science ®Google Scholar
• McGrew, W. C. (1992). Chimpanzee material culture: Implications for human evolution. Cambridge: Cambridge University Press.
   Google Scholar
• McPhee, M. E. (2004). Generations in captivity increases behavioral variance: Considerations for captive breeding and reintroduction programs. Biological Conservation, 115(1), 71–77.
   Web of Science ®Google Scholar
• Meagher, R. K. (2009). Observer ratings: Validity and value as a tool for animal welfare research. Applied Animal Behaviour Science, 119(1–2), 1–14.
   Web of Science ®Google Scholar
• Melfi, V. (2009). There are big gaps in our knowledge, and thus approach to zoo animal welfare: A case for evidence-based zoo animal management. Zoo Biology, 28, 574–588.
   PubMed Web of Science ®Google Scholar
• Melfi, V., & Feistner, A. (2002). A comparison of the activity budgets of wild and captive Sulawesi crested black macaques (Macaca nigra). Animal Welfare, 11(2), 213–222.
   Web of Science ®Google Scholar
• Melfi, V., & Marples, N. (2000). How different captive environments affect the behaviour of Sulawesi crested black macaques. 2nd Annual Symposium of Zoo Research (pp. 151–157).
   Google Scholar
• Melfi, V., & Marples, N. (2003). Multiple-regression: A method to establish the effects of captivity on behaviour. 3rd Annual Symposium on Zoo Research (pp. 27–39).
   Google Scholar
• Melfi, V., McCormick, W., & Gibbs, A. (2004). A preliminary assessment of how zoo visitors evaluate animal welfare according to enclosure style and the expression of behaviour. Anthrozoos, 17(2), 98–108.
   Web of Science ®Google Scholar
• Melfi, V., & Thomas, S. (2005). Can training zoo-housed primates compromise their conservation? A case study using Abyssinian colobus monkeys (Colobus guereza). Anthrozoos, 18(3), 304–317.
   Web of Science ®Google Scholar
• Melfi, V. A. (2001). Identification and evaluation of the captive environmental factors that affect the behaviour of Sulawesi crested black macaques (Macaca nigra) ( Unpublished doctoral thesis). Department of Zoology, University of Dublin, Trinity College Dublin, Ireland.
   Google Scholar
• Mendoza, S., Capitanio, J., & Mason, W. (2000). Chronic social stress: Studies in non-human primates. In G. Moberg & J. Mench (Eds.), The biology of animal stress basic principles and implications for animal welfare (pp. 227–248). Wallingford, UK: CABI Publishing.
   Google Scholar
• Mitani, J. C. (1989). Orangutan activity budgets: Monthly variations and the effects of body size, parturition, and sociality. American Journal of Primatology, 18(2), 87–100.
   PubMed Web of Science ®Google Scholar
• Mitchell, G., Obradovich, S., Sumner, D., De Morris, K., Lofton, L., Minor, J., … Foster, T. (1990). Cage location effects on visitor attendance at three Sacramento zoo mangabey enclosures. Zoo Biology, 9, 55–63.
   Web of Science ®Google Scholar
• Mitchell, G., Tromborg, C., Kaufman, J., Bargabus, S., Simoni, R., & Geissler, V. (1992). More on the ‘influence’ of zoo visitors on the behaviour of captive primates. Applied Animal Behaviour Science, 35, 189–198.
   Web of Science ®Google Scholar
• Moberg, G. (2000). Biological responses to stress: Implications for animal welfare. In G. Moberg & J. Mench (Eds.), The biology of animal stress: Basic principles and implications for animal welfare (pp. 1–22). Wallingford, UK: CABI Publishing.
   Google Scholar
• Moodie, E. M., & Chamove, A. S. (1990). Brief threatening events beneficial for captive tamarins? Zoo Biology, 9(4), 275–286.
   Web of Science ®Google Scholar
• Morgan, K., & Tromborg, C. (2007). Sources of stress in captivity. Applied Animal Behaviour Science, 102, 262–302.
   Web of Science ®Google Scholar
• Muller, M. N., & Wrangham, R. W. (2004). Dominance, cortisol and stress in wild chimpanzees (Pan troglodytes schweinfurthii). Behavioral Ecology and Sociobiology, 55(4), 332–340.
   Web of Science ®Google Scholar
• Murray, C. M., Heintz, M. R., Lonsdorf, E. V., Parr, L. A., & Santymire, R. M. (2013). Validation of a field technique and characterization of fecal glucocorticoid metabolite analysis in wild chimpanzees (Pan troglodytes). American Journal of Primatology, 75, 57–64.
   PubMed Web of Science ®Google Scholar
• Nailufar, B., Perwitasari, S., & Perwitasari, D. (2015). Landscape modeling for human – Sulawesi crested black macaques conflict in North Sulawesi. Procedia Environmental Sciences, 24, 104–110.
   Google Scholar
• Novak, M., & Suomi, S. (1988). Psychological well-being of primates in captivity. The American Psychologist, 43(10), 765–773.
   PubMed Web of Science ®Google Scholar
• Orgeldinger, M. (1997). Protective and territorial behavior in captive siamangs (Hylobates syndactylus). Zoo Biology, 16(4), 309–325.
   Web of Science ®Google Scholar
• Ostner, J., Heistermann, M., & Schulke, O. (2008). Dominance, aggression and physiological stress in wild male Assamese macaques (Macaca assamensis). Hormones and Behaviour, 54, 613–619.
   PubMed Web of Science ®Google Scholar
• Pomerantz, O., Meiri, S., & Terkel, J. (2013). Socio-ecological factors correlate with levels of stereotypic behaviour in zoo-housed primates. Behavioural Processes, 98, 85–91.
   PubMed Web of Science ®Google Scholar
• Robinson, L. M., Waran, N. K., Leach, M. C., Morton, F. B., Paukner, A., Lonsdorf, E., … Weiss, A. (2016). Happiness is positive welfare in brown capuchins (Sapajus apella). Applied Animal Behaviour Science, 181, 145–151.
   Web of Science ®Google Scholar
• Sapolsky, R. M. (2005). The influence of social hierarchy on primate health. Science, 308, 648–652.
   PubMed Web of Science ®Google Scholar
• Sapolsky, R. M., Romero, L. M., & Munck, A. U. (2000). How do glucocorticoids influence stress responses? Integrating permissive, suppressive, stimulatory, and preparative actions. Endocrine Reviews, 21(1), 55–89.
   PubMed Web of Science ®Google Scholar
• Schwarzenberger, F. (2007). The many uses of non-invasive faecal steroid monitoring in zoo and wildlife species. International Zoo Yearbook, 41(1), 52–74.
   Google Scholar
• Shepherdson, D. (1994). The role of environmental enrichment in the captive breeding and reintroduction of endangered species. In P. J. S. Olney, G. M. Mace & A. T. C. Feistner (Eds.), Creative Conservation (pp. 167–177). London: Chapman & Hall.
   Google Scholar
• Sheriff, M. J., Dantzer, B., Delehanty, B., Palme, R., & Boonstra, R. (2011). Measuring stress in wildlife: Techniques for quantifying glucocorticoids. Oecologia, 166(4), 869–887.
   PubMed Web of Science ®Google Scholar
• Shivik, J. A., Palmer, G. L., Gese, E. M., & Osthaus, B. (2009). Captive coyotes compared to their counterparts in the wild: Does environmental enrichment help? Journal of Applied Animal Welfare Science, 12(3), 223–235.
   PubMed Web of Science ®Google Scholar
• Stone, A. I. (2008). Seasonal effects on play behavior in immature Saimiri sciureus in eastern Amazonia. International Journal of Primatology, 29(1), 195–205.
   Web of Science ®Google Scholar
• Strier, K. B. (1987). Activity budgets of woolly spider monkeys, or muriquis (Brachyteles arachnoides). American Journal of Primatology, 13(4), 385–395.
   Web of Science ®Google Scholar
• Swaisgood, R. (2007). Current status and future directions of applied behavioural research for animal welfare and conservation. Applied Animal Behaviour Science, 102, 139–162.
   Web of Science ®Google Scholar
• Takeshita, R. S. C., Bercovitch, F. B., Huffman, M. A., Mouri, K., Garcia, C., Rigaill, L., & Shimizu, K. (2014). Environmental, biological, and social factors influencing fecal adrenal steroid concentrations in female Japanese macaques (Macaca fuscata). American Journal of Primatology, 76(11), 1084–1093.
   PubMed Web of Science ®Google Scholar
• Tarou, L. R., Kuhar, C. W., Adcock, D., Bloomsmith, M. A., & Maple, T. L. (2004). Computer-assisted enrichment for zoo-housed orangutans (Pongo pygmaeus). Animal Welfare, 13(4), 445–453.
   Web of Science ®Google Scholar
• Tetley, C. L., & O’Hara, S. J. (2012). Ratings of animal personality as a tool for improving the breeding, management and welfare of zoo mammals. Animal Welfare, 21(4), 463–476.
   Web of Science ®Google Scholar
• Thompson, M. E., Muller, M. N., Kahlenberg, S. M., & Wrangham, R. W. (2010). Dynamics of social and energetic stress in wild female chimpanzees. Hormones and Behaviour, 58, 440–449.
   PubMed Web of Science ®Google Scholar
• Thorpe, S. K., Tennie, C., Myatt, J. P., & Chappell, J. (2017). An enclosure design tool to enable zoos to create integrated, wild-type enclosures for great apes. Retrieved from http://gtr.rcuk.ac.uk/projects?ref=NE/M021300/1
   Google Scholar
• Topping, N., & Melfi, V. (2007). Factors that affect the behaviour of zoo housed Sulawesi crested black macaques (Macaca nigra) at Paignton zoo. 8th Annual Symposium on Zoo Research (pp. 42–49).
   Google Scholar
• Ulyan, M., Burrows, A., Buzzell, C., Raghanti, M., Marcinkiewicz, J., & Phillips, K. (2006). The effects of predictable and unpredictable feeding schedules on the behaviour and physiology of captive brown capuchins (Cebus apella). Applied Animal Behaviour Science, 101, 154–160.
   Web of Science ®Google Scholar
• Van Horn, R. N. (1975). Primate breeding season: Photoperiodic regulation in captive lemur catta. Folia Primatologica, 24(2–3), 203–220.
   PubMed Web of Science ®Google Scholar
• Van Meter, P. E., French, J. A., Dloniak, S. M., Watts, H. E., Kolowski, J. M., & Holekamp, K. E. (2009). Fecal glucocorticoids reflect socio-ecological and anthropogenic stressors in the lives of wild spotted hyenas. Hormones and Behavior, 55(2), 329–337.
   PubMed Web of Science ®Google Scholar
• Van Schaik, C. P. (2003). Local traditions in orangutans and chimpanzees: Social learning and social tolerance. In D. M. Fragaszy & S. Perry (Eds.), The biology of traditions (pp. 328). Cambridge: Cambridge University Press.
   Google Scholar
• Vanlangendonck, N., Nuñez, G., Chaves, A., & Gutiérrez-Espeleta, G. A. (2015). New route of investigation for understanding the impact of human activities on the physiology of non-human primates. Journal of Primatology, 4, 123.
   Google Scholar
• Veasey, J. S., Waran, N. K., & Young, R. J. (1996). On comparing the behaviour of zoo housed animals with wild conspecifics as a welfare indicator. Animal Welfare, 5, 13–24.
   Web of Science ®Google Scholar
• Waitt, C., & Buchanan-Smith, H. (2001). What time is feeding? How delays and anticipation of feeding schedules affect stump-tailed macaque behaviour. Applied Animal Behaviour Science, 75, 75–85.
   Web of Science ®Google Scholar
• Watters, J. V., & Powell, D. M. (2012). Measuring animal personality for use in population management in zoos: Suggested methods and rationale. Zoo Biology, 31(1), 1–12.
   PubMed Web of Science ®Google Scholar
• Weingrill, T., Gray, D. A., Barret, L., & Henzi, S. P. (2004). Faecal cortisol levels in free-ranging female chacma baboons: Relationship to dominance, reproductive state and environmental factors. Hormones and Behaviour, 45, 259–269.
   PubMed Web of Science ®Google Scholar
• Weiss, A., Inoue‐Murayama, M., Hong, K. W., Inoue, E., Udono, T., Ochiai, T., & King, J. E. (2009). Assessing chimpanzee personality and subjective well‐being in Japan. American Journal of Primatology, 71(4), 283–292.
   PubMed Web of Science ®Google Scholar
• Weiss, A., King, J. E., & Perkins, L. (2006). Personality and subjective well-being in orangutans (Pongo pygmaeus & Pongo abelii). Journal of Personality and Social Psychology, 90(3), 501–511.
   PubMed Web of Science ®Google Scholar
• Wemelsfelder, F. (2007). How animals communicate quality of life: The qualitative assessment of behaviour. Animal Welfare, 16, 25–31.
   Web of Science ®Google Scholar
• Wemelsfelder, F., Hunter, T. E. A., Mendl, M. T., & Lawrence, A. B. (2001). Assessing the ‘whole animal’: A free choice profiling approach. Animal Behaviour, 62, 209–220.
   Web of Science ®Google Scholar
• Whitham, J. C., & Wielebnowski, N. (2009). Animal‐based welfare monitoring: Using keeper ratings as an assessment tool. Zoo Biology, 28(6), 545–560.
   PubMed Web of Science ®Google Scholar
• Whitten, P. L., Stavisky, R., Aureli, F., & Russell, E. (1998). Response of fecal cortisol to stress in captive chimpanzees (Pan troglodytes). American Journal of Primatology, 44, 57–69.
   PubMed Web of Science ®Google Scholar
• Yamanashi, Y., & Hayashi, M. (2011). Assessing the effects of cognitive experiments on the welfare of captive chimpanzees (Pan troglodytes) by direct comparison of activity budget between wild and captive chimpanzees. American Journal of Primatology, 73(12), 1231–1238.
   PubMed Web of Science ®Google Scholar
• Yeates, J. W., & Main, D. C. (2008). Assessment of positive welfare: A review. The Veterinary Journal, 175(3), 293–300.
   PubMed Web of Science ®Google Scholar