The story is a little stupid: Both eagles and crows reach ca. 30 y./a., both feed more or less on the same menu, the percentage of carrion in the eagle's menu being even higher than in the crow's menu.
But that's a Kalmyk story, and the Kalmyks used to drink fresh blood; this is how they justified it. Actually, nothing proves that you live longer if you feed on carrion..
The rating stars are not for the story, but for the translation, which is o.k.