Background
Understanding the behavior of primates is important for primatology, psychology, and for biology more broadly since primates are an important model organism, and whose behavior is often an important variable of interest. However, our ability to rigorously quantify behavior has long been limited, due to the high manual cost of observing and the difficulty in long-term observing in the wild. Behavioral tracking in primates has recently become possible through parallel developments in computer vision, machine learning, and robotics when technical breakthroughs in deep learning enabled software to recognize objects in an image by use of CNN. Several works enable automatic tracking of humans (Cao et al., 2019 Newell et al., 2016). These works in turn inspired and facilitated work that allowed for the tracking of animals such as flies, mice, and horses from videos (Mathis et al., 2018; Pereira et al., 2019).