Source Text
The raven is another animal that changed its appearance during its sojourn in the ark. When Noah desired to send him forth to find out about the state of the waters, he hid under the wings of the eagle. Noah found him, however, and said to him, "Go and see whether the waters have diminished." The raven pleaded: "Hast thou none other among all the birds to send on this errand?"
Noah: "My power extends no further than over thee and the dove." But the raven was not satisfied. He said to Noah with great insolence: "Thou sendest me forth only that I may meet my death, and thou wishest my death that my wife may be at thy service." Thereupon Noah cursed the raven thus: "May thy mouth, which has spoken evil against me, be accursed, and thy intercourse with thy wife be only through it."
All the animals in the ark said Amen. And this is the reason why a mass of spittle runs from the mouth of the male raven into the mouth of the female during the act of copulation, and only thus the female is impregnated. Altogether the raven is an unattractive animal. He is unkind toward his own young so long as their bodies are not covered with black feathers, though as a rule ravens love one another.
God therefore takes the young ravens under His special protection. From their own excrement maggots come forth, which serve as their food during the three days that elapse after their birth, until their white feathers turn black and their parents recognize them as their offspring and care for them.