Whooping Crane
Journal Questions: Fill in the Chart
- What is the latest hatch date (the birthday of the youngest chick) in the Class of 2009? (Find out here. Remember how the birds are numbered.)
- BONUS: If they take off on October 10 as now planned, what will be the average age of the birds on the day they start migration? How does this year's average age compare to previous years?
| YEAR | LATEST HATCH DATE | DEPARTURE DATE | AVERAGE AGE AT DEPARTURE |
| 2009 | estimated: | ||
| 2008 | June 15 | Oct. 17 | 124 days |
| 2007 | June 10 | Oct. 13 | 125 days |
| 2006 | May 31 | Oct. 5 | 127 days |
| 2005 | June 3 | Oct. 14 | 133 days |
| 2004 | June 5 | Oct. 10 | 127 days |
| 2003 | May 23 | Oct. 16 | 146 days |
| 2002 | May 21 | Oct. 13 | 145 days |
| 2001 | May 24 | Oct. 17 | 146 days |
Total |
|||
Avg. Age at Departure |
Check your answer. >> |
From Joe Duff in Operation Migration's Field Journal
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