"...around 1820, C.W. Eckersberg was busy painting portraits of the affluent citizens of Copenhagen. In one of the two works he painted Bella and Hanna Nathanson in a sparingly furnished drawing room with simple panelling and furniture, including a table bearing a parrot’s cage. The parrot opens up the scene to symbolic readings...." http://vangoyourself.com/paintings/bella-and-hanna/ . See also http://www.smk.dk/en/explore-the-art/highlights/christoffer-wilhelm-eckersberg-bella-and-hanna/