134
Nov. 1873
Leaving its perch it flies a few hundred yards then poising above the meadow at the height of perhaps fifty (50) feet, maintains its position for a moment or two with continued flappings, until getting fairly balanced, it will float for many minutes at a time, on entirely motionless, outspread wings, its body nearly horizontal, the head lowered, and eyes keenly scanning the ground below.
On several occasions I have seen it hover in this way a moderately strong wind for some time, without a single apparent motion or any perceptible drift- and when thus poised it simply strongly reminds one of a stuffed bird suspended by a wire. This feat I have never seen performed by any bird, though I find it attributed to Buteo Montanis, by a writer in a recent number of Nature, whose explanation of the thereof would however utterly fail in the present instance as all the conditions necessary to support his theory have been under my observations, entirely reversed. After alternately flapping and poising should it fail in its search, it proceeds to another part of the meadow, and there repeats the performance- and if after trying several places, it is still unsuccessful, it almost invariably returns to the first point, and begins again.
When at length it discovers a mouse, or other small quadruped, it descends in a succession of curves as on the iris a to B (- eagerly protruding its talons as it nears the earth- (as I have seen it strike its victim only 3 or 4 times I am not sure that this singular mode of descent is always followed, indeed in the only instance where I saw one swoop from a tree, it pailed down on a nearly even plane))