Meaning of rabbits in season of the witch

“Two rabbits running in the ditch,” goes the line in that delightfully spooky song Season of the Witch by Donovan. Rabbits are also shown in some Fall motifs. As we often associate rabbits with Spring, Easter and fertility I never particularly thought of them as a fall representation until that song…
Then I put some thought into why. Rabbits symbolize fertility and boundless energy. The harvest, the season of the witch, is the culmination of all the growing after Spring planting. The harvest also requires energy to reap. It also symbolizes fertility because we also want a fertile plentiful harvest. A good fertile Spring makes for a good Harvest.