Ninety percent of migratory flying is done at night, with the birds taking advantage of the stars for celestial navigation. When an overcast obscures sun or moon or stars, they sometimes get lost.
There are clear indications that the birds seek out favorable winds. They correct their flights for sideways wind drift, avoid strong headwinds.
Hawks, eagles and vultures are especially hazardous to aircraft because they are not afraid of planes.
At the National Field Archery Association championships at Watkins Glen, N.Y. this year, Clifford Necessary of Richmond, Va. set a record for an archer shooting without a bow sight. He scored 2,537 points in five rounds. His high round was 513. In Hunters Harbor, a small community on the Magothy River in Maryland, 14-year-old Mike Lindemon has shot as high as 516 in a round. Hunters Harbor is just an arrow's flight from Sherwood Forest, Md.
Mike, who has been shooting the bow and arrow for little more than a year, has scored over 500 on three occasions. He believes he could do even better with a sight but does not want to bother with one just yet. And anyway, he says, "sight shooters only shoot around 500."
In addition to his competitive achievements, Mike has one other notable distinction. He has shot what bowmen call a " Robin Hood."
He did this by shooting one arrow into a target. Then he shot a second arrow, which split the first, fused and formed a single shaft almost twice the length of a normal arrow, with two sets of feathers.
Which is quite enough to make a veteran archer turn forest green.
MUSKIE BOOM AT ROCKY FORK