Show how birds birda know the way one of the many explanations that hit been offered to account for the fact that migrating birds birdi are able to did bad their way by night und and in cloudy and bd foggy weather la IR that they are arc sen ildie in some aonie way to currents cur renta of terrestrial magnetism ands and therefore direct their flight by the magnetic meridians rid rii llam ians says the popular science monthly this was put forth by M A a french cleeon fari fancier cler who declares clarea de that carrier pigeons in make ake poor flights durina tie the occurrence of magnetic storms ht H also asserts that the lie general use of wireless telegraphy has diminished the reliability of these birds to a la extent |