Patterns of behaviour of sub-adult female rhesus monkey Macaca mulatta in Yangon Zoological Garden were investigated during July, 2016 to January, 2017. The patterns of behaviour of adult and sub-adult female rhesus monkey were recorded using scan sampling method. Each behaviour of sub-adult female of rhesus monkey consisted of, feeding (12.48%), grooming (24.52%), locomotion (29.01%), resting (25.01%), playing (4.86%) and aggressive (4.12%) respectively. The frequencies of locomotion behaviour were higher than the other behaviours in sub-adult female.

Keywords : Sub-Adult Female; Rhesus Monkey; Behavioural Patterns.