Number
of Days on Florida Wintering Grounds
Eastern
Flock, First Ultralight-led Cranes to Depart
Year |
Days
Spent on Wintering Grounds
( first birds to depart)
|
Class
of 2010 |
|
|
Class
of 2009 |
70
days
(St. Marks) |
75 days (Chassahowitzka) |
Class
of 2008 |
72
days
(St. Marks) |
60 days (Chassahowitzka) |
Class
of 2007 |
57
days |
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
9 years in which ultralight-led cranes have departed on spring migration?
2. How might the differences from year to year be explained?
|