41. The Migration Period was long believed to have been a time of crisis and devastation in Scandinavia. 42. However, the local population withstood all the adversities of the migration period and retained its Roman character. 43. Passerine feathers were found in a large number of pellets collected during the two bird migration periods . 44. They purportedly reigned during the Migration Period . 45. They purportedly reigned during the Migration Period ; the first ruler attested independently of Lombard tradition is Tato. 46. The resort was completely ruined and deserted in the 4th century during the invasions of the Migration period . 47. Researchers and volunteers have since then been working on the island during the spring and autumn migration periods . 48. Art forms also changed as jewellery began exhibiting the increasing influence of Migration Period Art from continental Europe. 49. Depictions found on Migration Period Germanic bracteates are often viewed as Wodan ( Odin ) healing a horse. 50. A region named Germania was documented before 100 AD . During the Migration Period the Germanic tribes expanded southward.