Is it a bird, is it a plane? No--- its supercow. These thoughts must have been running through the mind of Paul Brown, of Jenningsville on Friday evening, as he saw a Holstein heifer with a 20 foot wingspan coming toward him on the highway followed by some 40 other cows. This amazing sight had its beginning when the heifer owned by Clayton Sharpe, of Jenningsville, wandered into a barn in search of hay. Somehow she manged to dislodge a 20 foot ladder from its storage space and it fell on her horns--perfectly balanced. Despite the annoying protruberance the heifer was able to maneuver through a narrow doorway leading to the barnyard, Panicky because of the strange apparatus on her head she then bolted down the highway. The other herd members either upset at the unusual turn of events or just wanting to get a better look at their ladder bedecked sister, took of down the road in her wake. Just then Mr. Brown was driving his foreigh made compact car toward the home he rents on the Sharpe farm. Great was his surprise to see the wider than the average cow and her entourage bearing down upon him. The ladder jus missed his windshield as the beleaguered bovine whizzed past and as the heifer swerved to one side to avert a head on crash the tip of the ladder caught the embakement. This caused her to spin out and as she fell to the ground the ladder was dislodged. About an hour's work was required to round up the animals and get them back where they belonged