There is one unborn being (female), red, white, and black, uniform, but producing manifold offspring. There is one unborn being (male) who loves her and lies by her; there is another who leaves her, while she is eating what has to be eaten.

In plain words: This riddle speaks of one unborn female being, red, white and black, who is all of one kind yet gives birth to many offspring. One unborn male being loves her and lies beside her. Another one leaves her while she is busy eating what is there to be eaten.