作者: Peter Weindler , Willy Beck , Varis Liepa , Wolfgang Wiltschko
DOI: 10.1016/0003-3472(95)80171-5
关键词:
摘要: Abstract To examine whether magnetic orientation in young birds was affected by conditions the region where they grew up, behaviour of pied flycatchers, Ficedula hypoleuca (Muscicapidae), hand-raised Riga, Latvia (50 000 nT, 73° inclination), compared with that conspecifics Frankfurt a.M., Germany (46 66° inclination). Orientation recorded during autumn migration funnel cages local geomagnetic field under non-visual conditions. Birds had been without a view sky showed unimodal tendency their migratory direction, whereas Latvia, raised similar bimodal along axis. A second group Latvian exposed to rotating planetarium prior tests also preference. This suggests celestial rotation observed pre-migratory period may play an important role helping decide which end axis points towards wintering area.