European Stars And Stripes (Newspaper) - August 22, 1977, Darmstadt, Hesse                                August 1w7 the stars and stripes Page 19 Keeton cradles an Avlan Guinea p0 one of the pigeons studied by researchers in Bird bum checking out the flight plan by Joe Wing associated press blur their eliminate remove their play tricks with Light and scientists have done All of these things and More and still dont know Bow Birds find their Way in the As surely 83 the swallows return each year to researchers return from the Field with fresh data and new the but clues have become so numerous says one William Keeton of Cornell University at that in some ways we Are More con fused than we must have a better understanding of the Birds sensory after a period of scientists have made impressive Progress in the past six or seven years and Are far past the stage where instinct is the acceptable Ilion Tor Bird part of the problem la Wmk Rytand ing How Birds Hod paths path less skies is mat they do not Bear or feel things in the Way that we understand Fig Avian navigation depend of  of that vary with weather the toe species and Ibe and Ibe experience of among this says discouraged investigators because their observations failed toy idd uniform but once new theories Are evolving from mowed scientific just this Cornell researchers re ported that caged pigeons the Guinea pigs of the Avian behaviour laboratories can sense ultrasound caused by vibrations that human earn cant such sounds May travel thousands of mites without it might be possible for a Bird to Orient itself by the Roar of some Remote the rumble of far off heavy or us surge of experiments now in the works May Clear up the question of whether Birds use such another promising Lead came from Donald Griffin of Rockefeller he Analysed reports from Bat Loo lists and found that Ordinary sound penetrates the silent skies wore certainly than it spreads along the Roger Pasquier of the american museum of natural history says this might help a night flyer to find marshes by the croaking of or seashores by the pounding of but again it is not known whether Birds use these dues or whether they Are wiped out by background there u port butty out have a Roper sense to to guide them to their in diag Jet Saunoa follow Ibert Back to the streams of their Onri Ano Pant of the Imp Nelly of Pisa will Dowum this theory at Condi this summer with american sete Tolsti who have been of Oak to duplicate Oil findings trill similar another recent by Cor Nell scientist is evidence that like detect polarized enabling them to Orient themselves by the Sun even on partially overcast tie fact that Birds at times do get their bearings by the Sun was established Long ago by a Gustav he noted that when migratory mad Ness hit cluttered in a sunny Cage according to the direction they would have flown it they then changed their pos Tures when the nuns rays were deflected by mirrors carrying the idea a step Sauer showed that while Throat caged in a european were guided by the changing position of the Stan at migration this was important because most Small Birds Migrate at and Keeton and his Melvin report that Birds Are so sensitive to barometric pressure that they can Tell the difference Between that at the floor and the Selling of a my of this Points to the conviction that Birds use an array of dues in and it presupposes that they have physical equivalents for mechanical used by men to guide planes and ships across land and that is not All Long ago he theory was proposed that Birds Are affected by he earths although it appeared they were distracted on occasion by radio the about decade Wolfgang wet into d Germany began a kites of reports migrating Are affected by weak magnetic Seetoo bund that pistons were affected to Tike and William Southern got similar a turks la Dunois with Only this Ronam la fan of Rockefeller University reported that Birds Are sensitive to magnetic Fields such As the one that might be set up by the navys seafarer project in Wisconsin to transmit radio Keeton says it is pretty Well established that Birds use magnetism As a Fallback navigation system when they cant use the people once thought that keen vision helped Birds find Way by flying from one known landmark to that the Way homing pigeons seem to do but the Golden spanning thousands of Miles from Alaska to Hawaii and new the helped by no Toben thought that Birds traced yes Tel motes Tay following to tar Ibe Wiy Gem teem but for Ike which Are raised by Foster parents of other or by the Short bid called Takht whih Waits until us have departed before begin Ning to journey from the Arctic to sooth in a Birds can even Fly White nearly a German researcher found that pigeons wearing Contact lenses that limited their vision to a few feet Are Able to reach their once upon a time pole thought Birds hibernate in mud during Winter or that they flew to the or that Little Birds hitchhiked on the backs of us the Stilt deeper mystery of Why they go May never yield fully to exp Romeo As Leslie Schroeder of the museum of at Boston once wrote each new set of experiments turns up some behaviour that cannot be explained in any simple