  Two main methods for exploring patterns in data are data visualization and
machine learning. The former relies on humans for investigating the patterns
while the latter relies on machine learning algorithms. This paper tries to
find the patterns using only data visualization. It addresses the mystery of
population decline of a bird, named Rose-Crested Blue Pipit, in a hypothetical
nature preserve. Different visualization techniques are used and the reasons of
the problem are found and categorized. Finally, the solutions for preventing
the future similar problems are suggested. This paper can be useful for getting
introduced to some data visualization tools and techniques.
