Previous studies on captive giraffes have shown that an increase in foraging opportunities leads to reduced abnormal behaviour. This study evaluates the nocturnal behaviours of six captive giraffes, housed in Aalborg Zoo (N: 57.04°, E: 9.90°). The herd consists of one male giraffe (age 8), one male calf (age 1 ½), two femelle giraffe (age 7; 20) and two female calves (age 8 months; 2 years).  The observations lasted eight nights and compared two observation periods (October and November) with different compositions of branches. The giraffes spent approximately 30% of their nocturnal activity on feeding behaviour. An increase in feeding behaviour was correlated with a decrease in oral stereotypy. It was observed that the type of branches influenced time spent on browsing as it was consumed at different rates. Further studies are required to clarify questions left in this study, such as studies with more observation days and known types of branches

The novel concept of behavioural instability has proven suitable for  studying the behavior and personality in zoo animals. Individual personality  has an impact on how the zoo best perform environmental enrichment,  and behavioural diversity of captive populations intended to potentially  repopulate wild habitats. This study aims to prove the presence of recognizable  personalities in Rothschild giraffes (Giraffa camelopardalis rothschildi), as well as  to investigate whether visitor numbers affect the behavioural expressions  in this species. Six giraffes (bot young and adults) were filmed in Aalborg  Zoo, and the recordings were subsequently analysed. The procured data was then analysed using a series of tests primarily focusing on behavioural reaction  norms. The results shows that distinct personalities exist within the groups of  Rothschild giraffes. However, the number of visitors exhibited no statistical  significance upon the behaviour of the individuals. It can thereby be concluded that  specimens of Rothschild giraffes possess unique personality traits which are worth defining in order to ensure behavioural diversity.