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 2008 ______ days (Chass)
______ days (St. Marks)
Class of 2007 58 days
Class of 2006 (no winter 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 or Discussion Questions
1. What is the average number of days spent on the wintering grounds for the Eastern flock's 8 years of spring migrations?

2. What might explain the differences from year to year?