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Number of Days on the Wintering Grounds
Eastern Flock, First Ultralight-led Cranes to Depart

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Days Spent on Wintering Grounds
( first birds to depart)
Class of 2007 (your answer for crane #709)
Class of 2006 (no ultralight-led survivors)
Class of 2005 106 days
Class of 2004 104 days
Class of 2003 113 days
Class of 2002 121 days
Class of 2001 126 days

Journal Questions

1. What is the average number of days on the wintering grounds for the 6 years in which cranes departed on spring migration?

2. How might the differences from year to year be explained?



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