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Great Circle Hypotheis
Magnetoclinic Hypothesis
Magnetic-Latitude Hypothesis
Compass Bearings Hypothesis
Suns' Azimuth Hypothesis
Expansion-Contraction Hypothesis
Always Advance Hypothesis
Never Go Back Hypothesis
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Analysis of Field Data for the 1987 Monarch
Butterfly Migration in Calhoun, Georgia
 Table
II a
Preferred Mean Direction for Monarchs Flying Within 3 m of the Ground : Source
of Observations used in Calculations (Next Page)
September 28 - October 10, 1987 observations of the Danaus plexippus
migration in Calhoun, Georgia
|
|
Date |
Table |
Sample
size |
Observations*
of = < 3 m |
Reasons for Exclusion |
|
Sept. 28 |
I
|
3 (4) |
4, 11, 13, 27 |
circling |
29 |
II
|
6 (7) |
36, 44, 49, 50,
52, 55, 56 |
circling |
30 |
III
|
- |
- |
-
|
Oct. 1 |
IV
|
1 (1) |
220 |
-
|
2 |
V
|
4 (8) |
233, 234, 236, 237, 238,
239, 242, 243 |
social flight,
evasive flight |
3 |
VI
|
- |
- |
-
|
4 |
VII
|
- |
- |
-
|
5 |
VIII
|
8 (8) |
275, 278, 283,
286, 291, 298, 301, 304 |
-
|
6 |
IX
|
1 (3)
|
317, 318, 323, |
circling, turned |
7 |
X
|
2 (3) |
332, 335, 343 |
circling |
8 |
XI
|
- |
- |
-
|
9 |
XII
|
6 (6) |
410, 413, 414,
416, 418, 420 |
-
|
10 |
XIII
|
- |
- |
-
|
|
Totals |
- |
31 (40) |
To Results |
 |
|
* Observations hi-lighted in red were excluded in second round of calculations
for reasons given in column 5.
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