11. That honking you hear overhead is the " seasonal migration of geese ." 12. Transhumance in Belv�d�re . The seasonal migration between valley and high pastures ]] 13. Past surveys have been criticized for inflating numbers by failing to consider seasonal migration . 14. The pelagic stingray performs seasonal migrations following warm water masses. 15. Agriculture, livestock, forestry and seasonal migrations have long been the main sources of income. 16. Seasonal migration distances should be a good indicator of efficiency.17. This was supplemented, by a seasonal migration , especially of bricklayers and stonemasons from Italy. 18. Transhumance is the seasonal migration of livestock and pastoralists between higher and lower pastures. 19. Herders practiced transhumance seasonal migrations along fairly well set patterns. 20. The finless porpoise is known to also follow seasonal migrations .
