Em novela clássica de Raymond Z. Gallun " Sementes do Crepúsculo " (publicado pela primeira vez em Astounding Science-Fiction , junho de 1938 , disponível em Internet Archive ), os corvos evoluíram a inteligência quase humana, mas não têm tecnologia. Kaw o corvo é um dos personagens principais desta história de invasão alienígena no futuro:
Kaw, the Crow, recognized in this thing that it was alien — not of Earth — and that, to him, spelled danger to himself and all his kind.
[. . . .]
Kaw felt a twinge of dread. Evolution, working through a process of natural selection — and, in these times of hardship and pitiless competition, putting a premium on intelligence — had given to his kind a brain power far transcending that of his ancestors. He could observe, and could interpret his observations with the same practical comprehension which a primitive human being might display. But, like those primitives, he had developed, too, a capacity to feel superstitious awe.
[. . . .]
They chuckled and chattered and cawed, like the crows of dead eras. But these sounds, echoing eerily beneath cloistered arches, dim and abhorrent in the advancing gloom of night, differed from that antique yammering. It constituted real, intelligent conversation.
Kaw, perched high on a fancifully wrought railing of bronze, green with the patina of age, urged his companions with loud cries, and with soft, pleading notes. In his own way, he had some of the qualities of a master orator. But. as all through an afternoon of similar arguing, he was getting nowhere. His tribe was afraid. And so it was becoming more and more apparent that he must undertake his mission alone. Even Teka, his mate, would not accompany him.