Wiltschko W, Gwinner E, Wiltschko R
Z Tierpsychol. 1980;53(1):1-8. doi: 10.1111/j.1439-0310.1980.tb00729.x.
It was the aim of this study to find out whether additional information from the sun and the stars during early development leads to an improvement in the young birds' non-visual orientation performance during their first autumn migration period. The results indicate that the birds' ability to determine their migratory direction can mature independently of celestial information. Celestial cues, however, appear to be involved in the normal maturation process of migratory orientation, since the availability of celestial information during ontogeny tends to impair the birds' non-visual orientation.
本研究的目的是探究在幼鸟早期发育过程中，来自太阳和星辰的额外信息是否会在其首次秋季迁徙期间改善它们的非视觉定向能力。结果表明，鸟类确定迁徙方向的能力可以独立于天体信息而成熟。然而，天体线索似乎参与了迁徙定向的正常成熟过程，因为在个体发育过程中天体信息的可获取性往往会损害鸟类的非视觉定向能力。
