Garudzep by Ranjeet Desai, Vasant Kanetkar

Kings are eagles you said.Eagles do not build nests on the ground; they build them high up in the crevasses of the mountains. Once her fledglings develop wings, the female eagle pushes them out over the edge of the nest. Only the ones with strong wings soar and return they are true eagles. If the king is indeed an eagle he will return to the nest. Otherwise, one will have to sadly conclude that this house never gave birth to an eagle. - The hunter who would catch this eagle in his net is yet to be born!