From the tail end of an article:
"Country people once thought lapwing eggs in fields were actually laid by hares. This belief gave rise to the Easter bunny. This bunny is, of course, a hare.
Some claim to see in the markings of the full moon a hare holding an egg. The animal is on its side with its long ears to the right. Once you "see" it, it's obvious."
Full article on hares:
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It seems that the brown hare does not burrow, it makes it's home in shallow depressions in the earth, and so do lapwings.
So there is more to it than dueling fertility symbols, whaddaya know!
NightMist