From Beguiled by the Wild: The Art of Charley Harper, page 60 (Flower Valley Press, 1994):
On the leading edge of spring, the cock robin stakes out his territory and sings up NO TRESPASSING signs. Cheerily, cheerily, cheerily, he sings cheerily. Translation: "Don't land here if you look like me, buster - this backyard's not big enough for both of us." Then the ladies arive and singles give way to doubles in the annual round robin. With all the fuss and feathers, he wins his match and they settle down to perpetuate the species. And that's the name of the game.
This also appeared in Charles Harper's Birds & Words, page 144 (AMMO Books, 2008, reissued from 1972 original).
Charley Harper - Round Robin
Product Code: HARRO2
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