Factors influencing stereotyped behavior of primates in a zoo
Abstract 10.1002/zoo.1430130308.abs Stereotyped behavior is the uniform repetition of a motor pattern that occurs at a higher frequency than considered typical for a species when observed in a natural environment. Stereotypies may be considered atypical behavior and usually indicate that an animal’s psychological welfare is at a suboptimal level. Instantaneous scans at 30-sec intervals during […]
Comparative behavior of primates. I. Delayed reaction tests on primates from the lemur to the orang-outan.
Using both the direct and indirect method, the authors tested the delayed-reaction ability of 2 anthropoid apes (an orang-utan and a white-handed gibbon), 19 old-world monkeys, 2 new-world monkeys, and 1 lemur. The animals were tested in their cages in the zoo. Delays of 0, 5, 15, 30, 60, 120, 180, and over 180 seconds […]