Choose the correct answer.
Swans form a bond with each other which very often lasts for life. The image of two swans swimming with their necks entwined in the shape of a heart has become a nearly universal symbol of love.
Having only one mate is practical, considering the time needed to migrate, establish territories, incubate, and raise their young. Spending extra time to attract another mate would take a lot of time. One of the benefits of mating for life is that the swans learn from their successes and failures each time they raise cygnets.
On the other hand, the queen bee in a honey bee hive is encouraged to have as many mates as possible. During a single mating flight, a queen bee can mate with up to forty drones. The more mates a queen has, the more attractive she is to the worker bees that keep her hive running.
