|Hummingbird surveillance drone|
Dorothy Van Doren, The Professor and I. New York: Appleton , 1959, p. 128 [spouse of Mark Van Doren, mother of Charles Van Doren; her brother-in-law was Carl Van Doren]—
When Blackie [the family cat] was a half-grown kitten, I found him with something in his mouth—something that didn't look like a mouse. He is very good about giving up his prey if I insist and this time I insisted; I pried his jaws apart, there was a rush, and a hummingbird flew off at breakneck speed. How Blackie ever caught a hummingbird, I don't know; how he could hold the delicate body in his jaws without hurting it, I don't know either. But it happened; there was no mistaking the tiny size, the pointed bill, the emerald flash; and there was no doubt that it was unhurt.