All eagles are renowned for their excellent eyesight, and the bald eagle is no exception. They have two foveae (or centers of focus), that allow the birds to see both forward and to the side at the same time. Bald eagles are capable of seeing fish in the water from several hundred feet above, while soaring, gliding or in flapping flight. This is quite an extraordinary feat, since most fish are counter-shaded, meaning they are darker on top and thus harder to see from above. Eagles also have color vision. An eagle's eye is almost as large as a human's, but its sharpness is from four to eight times that of a person with perfect vision. The eagle can probably identify a rabbit moving almost a mile away. That means that an eagle flying at an altitude of 1000 feet over open country could spot prey over an area of almost 3 square miles from a fixed position.
THE CACHE CAN BE FOUND AT: N 41 'A' , W 90 'B'
For 'A', find what eagle eyes might see at each of these locations (I suggest visiting them virtually, and orienting yourself in correct alignment at each), then take the total of all of those items TIMES 0.161507 , then use only the 1st 5 digits of that result:
N 41 36.174 , W 90 35.021
N 41 36.986 , W 90 35.113
N 41 26.504 , W 90 30.937
N 41 27.273 , W 90 30.885
N 41 26.645 , W 90 29.790
N 41 34.021 , W 90 31.143
N 41 49.961 , W 90 20.023
N 41 49.614 , W 90 19.954
N 41 22.191 , W 91 08.286
N 41 22.374 , W 91 09.402
N 41 45.883 , W 91 09.429
N 41 33.325 , W 90 34.038
N 41 29.206 , W 90 34.440
For 'B', find what eagle eyes might see at each of these locations (I suggest visiting them virtually, orienting yourself in correct alignment at each), then take the total of all of those items TIMES 0.10510239 , then use only the 1st 5 digits of that result:
N 41 36.887 , W 90 35.579
N 41 36.480 , W 90 35.495
N 32 42.348 , W 16 45.916
N 41 26.950 , W 90 31.567
N 41 26.918 , W 90 29.485
N 41 49.461 , W 90 19.547
N 41 50.290 , W 90 19.440
N 41 21.758 , W 91 09.222
N 41 22.041 , W 91 08.770
N 41 45.712 , W 91 08.879
N 41 32.694 , W 90 35.621
N 41 33.345 , W 90 34.014
N 41 33.078 , W 90 28.294
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