Mandarin duck y c n e u q e r f e v i t a l e r e h. The graph above indicates observed behaviors of pied imperial pigeons and. A total of11 behaviorswere observed, along with the relative frequency and ratio based onthe number of times they occurred. The relative frequency of each behavior (%) each behavior (%) After observing each species,the pied imperial pigeon (ducula bicolor) and. Mandarin duck (aix galericulata),we have found that both species spent arelatively large amount of time in a calm resting position that had no movement. Also, both chirped to call other birds of their species, and both spent some time in grooming themselves. Ducula bicolor never spent time eating and swimming, probably because they hadalready eaten before the observation and were not familiar with the aquatic habitat in which they were placed. Moreover, aix galericulata never spent time on excretion orsaltation.