OCR Text |
Show t , Migrating 1\figrating 1 figrating \ Birdt Birds BirdsAccording Accordin AccordJn According < ' to the bureau of blo- blo Mo- Mo Mogical blogical blo-oeical blo oeical - - gical 8U1'Vey 8U1Vey survey ' urrey , few migrating migratinggirds mieratinit ; . > ird3 1rd.l 1rdl girds . fly fty 11y higher hl < her than 3,000 3000 , feet andoniy and . , ' tmly oniy imtY'o imtYo " ' casionally occationaUy OCC ianaUy do they reach reachilOOO reachf ilOOO tiOQO & ,00 00 , & feet . . Most birda birds like to fly'bentath flybentath By fly flybaneah 1jJen"4tu 1jJen4tu By1jJen"4tu ' , baneah " . . the clouds , and the m ma- ma mat maioirlty - ' 3ortty ioirlty t ' ' J t1t1 ' of the pecies species micrate migrate at ata a iftlelfht > ttt + .t t I$1it I1it f $ . $ below elow 1,000 1000 , feet In bad badrfWafher badweather rfWafher weather athu they may fly much lower , "j j " J , .flit flit _ . evidenced vldenC evidcnced d by the number thatj9stt1ke thattlttike that * ; ' 'ttrllc ttrllc tlttike ajfalnst against ag inst liththouses lighthouses and andhi hieb high hightuiId1nrs h hywett j9stt1ke ' sIS tuiId1nrs buJJ4 ! . . Birds have , of course , , ywett- ywett . ,1 1 , ywetteea beaCeD be ? eeii eeiiq eeiiceA q , . -aCeD aCeD - - $ eea ceA . at much hither higher alU- alU alto alUde altou alto4udc0 1U-SyjbuieK 1U SyjbuieK - - { u " 4udc0 de ; but these records were e- e es- es eirtrhW esJ esablated * - - J . blJSbed ablated $ 1n 1a mountainous countne countries . ' \ irtrhW wherb the birda birds fly 8y a comparaUT comparative- comparative - comparativeW comparative13r - ' iy W 13r short short ort distance above the tho land land.lt'iTh land.ltiTh landltiTh . . . IlJ\1lhtr IlJ 1lhtr fn ' Th , ! bureau explains that mfgratmg inigrattug micrat- micrat mfgrat- mfgrat inigrat- inigrat micratfaieh - - f thanf mg tug birds fly at low rather than " rbigh ithigb , faieh altrtudea altItude altitudes ! by the fa fact fact t that the thej thelessened thelessened j " lessened buoyancy of air at ereatheights great greatbelg greatheights belg heights ts make makes * flyin flying ( difficult diftlcult . |