What is the main idea of egg horror poem by laurel winter?

The poem revolves around an unfertilized egg left behind in its nest to "keep house, / do chores. // She knows all." The central focus here is on themes of loneliness, domesticity as a trap, and a commentary on women being expected to perform domestic labor for no real purpose or reward. This theme is driven home with line such as "Her home // and home // until / they leave / her behind and gone " and "All this work, what for?".