Semantic field of pairings - 'Two days' 'Halved' 'pair of wings' to represent the couple show that they should be together
Natural imagery - relationships and conflict should be imbraced as a natural part of life
Swans - light colour - symbolic of light and purity and enduring love as they 'Mate for life'
Juxtaposing language - 'dark water' and 'white feather' conflict and the differences between the two people