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
|