Curiosity boosts orang-utan problem-solving ability
Publication/Journal: Animal Behaviour
Keywords: captivity effect, cognitive abilities, curiosity, experience effect, orang-utans, problem solving
2017
Recapturing the canopy: stimulating Bornean orang-utan (Pongo pygmaeus) natural locomotion behaviour in a zoo environment
Publication/Journal: Journal of Zoo and Aquarium Research
Keywords: body postures, enclosure design, great apes, movement patterns, positional behaviour, zoo welfare
2017
Understanding visual barriers: evidence for Level 1 perspective taking in an orang-utan, Pongo pygmaeus
Publication/Journal: Animal Behaviour
Keywords: orangutan, pongo, visial perspective, visual barriers
2005
Factors influencing stereotyped behavior of primates in a zoo
Publication/Journal: Zoo Biology
Keywords: black lemur, cotton-top tamarin, enrichment, gorilla, hamadryas baboon, lion-tailed macaque, orang-utan, rearing method, red-ruffed lemur, spider monkey
1994
Assessing reproductive status in orang-utans by using urinary estrone
Publication/Journal: Zoo Biology
Keywords: age, anorexia, estrogen, lactation, menstrual cycle
1991
Breeding orangutans at Perth Zoo: Twenty years of appropriate husbandry
Publication/Journal: Zoo Biology
Keywords: diet, husbandry, mortality, reproduction, social-structure
1990
Comparative behavior of primates. I. Delayed reaction tests on primates from the lemur to the orang-outan.
Publication/Journal: Journal of Comparative Psychology
Keywords: anthropoid apes, delayed-reaction ability, delays, direct and indirect method, increased ability., lemur, new world monkey, old-world monkey, orang-utan, white-handed gibbon
1932